New Products

Recombinant rabbit skeletal muscle troponin-C – added March 31, 2021
We now manufacture recombinant rabbit skeletal muscle TnC (3011). It is expressed, untagged, in E coli and purified using calcium-dependent affinity chromatography under non-denaturing conditions. It is an excellent alternative to native rabbit skeletal muscle TnC. It can be used to stabilize cardiac troponin-I in immunoassays. It is priced at $150/1 mg and $600/5 mg.

Recombinant human cardiac troponin-T – added March 30, 2021
We now manufacture recombinant human cardiac troponin-T (1111). It is expressed in E coli with an N-terminal his-tag and purified using metal-chelate affinity chromatography. It is offered as an alternative to native human cardiac troponin-T (1110). It is priced at $300/0.1 mg and $1500/mg.

Rabbit CRP ELISA, CRP-10-N – added March 19, 2021
We have developed an improved version of our popular rabbit CRP ELISA kit (CRP-10). The new kit (CRP-10-N) uses rabbit CRP IgY antibodies that were generated by injecting chickens with pure rabbit CRP and affinity purified on rabbit-CRP agarose. The standard used in the kit was calibrated to pure rabbit CRP, the concentration of which was determined by absorbance at 280 nm using the known extinction coefficient. Kit CRP-10 will be discontinued when antibodies used in its production are exhausted. Please refer to the kit instructions for more details.

Human Anti-PEG IgM ELISA – added February 15, 2021
The human anti-PEG IgM ELISA (PEGM-20) measures levels of anti-PEG IgM in serum, plasma, and other fluids. In studies at Life Diagnostics, we found that significantly more samples had measurable anti-PEG IgM than had measurable anti-PEG IgG. The kit is strictly for research use. It cannot be used for diagnostic purposes. Pricing can be found on our PEG ELISA kits page.

Human Anti-PEG IgG ELISA – added February 11, 2021
Over the past few months, we have observed significantly increased interest in human anti-PEG antibodies. We have therefore developed a human anti-PEG IgG ELISA kit (PEGG-20). The kit is strictly for research use only. It cannot be used for diagnostic purposes. Pricing can be found on our PEG ELISA kits page.

Horse SAA monoclonal antibodies – added February 4, 2021
We have developed three monoclonal antibodies for horse SAA, an acute phase protein that is an excellent biomarker for inflammation and tissue injury. Serum levels can increase up to 1000-fold. We offer three monoclonals; SAA-14-10D5 can be used in ELISA as an HRP conjugate, paired SAA-14-9B1 or SAA-14-16C10 as capture antibody. Please contact us for prices. Refer to the acute phase protein antibody page for a list of our other antibodies.

Cow SAA3 monoclonal antibodies – added December 31, 2020
Working with Veterinary Biomarkers, Inc., we have developed antibodies for cow SAA3, the isoform of serum amyloid A expressed in milk. SAA3 is an acute phase protein. Levels increase in milk during infections. It is a potential biomarker for mastitis. Currently, we offer two monoclonals; SAA3-11-5H6 and SAA3-11-11H3, that can be paired in immunoassays. Please contact us for prices.

Recombinant acute phase proteins and inflammatory biomarkers – added December 30, 2020
We now manufacture the recombinant acute phase proteins and inflammatory biomarkers listed below. ELISA kits are available for chicken EX-FABP (EXFABP-5), dog NGAL (NGAL-4), and dog PAP1 (PAP1-4). ELISA kits for others will follow soon.

Prices are listed on the acute phase proteins page.

Dog Pancreatitis Associated Protein-1 (PAP-1) ELISA – added July 21, 2020
PAP-1 is an acute phase protein. Its expression is very low in healthy pancreatic tissue but increases significantly during acute pancreatitis and other diseases. In studies at LDI, we found that fecal levels of PAP-1 increased significantly in dogs with IBD. The dog PAP-1 ELISA (PAP1-4) uses dog PAP-1 specific antibodies developed at LDI and is calibrated to pure dog PAP-1. It can be used for the measurement of PAP-1 in fecal extracts, serum, and plasma (other fluids have not yet been tested). A single 96-well kit is priced at $550. Volume discounts apply.

Human SAA ELISA – added April 8, 2020
Serum amyloid A has recently been identified as a potential biomarker for severe Covid-19 patients. We are pleased to launch our human SAA ELISA (SAA-20), available for research use only. Refer to our acute phase protein ELISA kits page for pricing.

Anti-Cow Haptoglobin Monoclonal Antibody – added March 19, 2020
We have recently added another cow haptoglobin monoclonal to our catalog. HAPT-11-6A8 pairs with HAPT-11-3F7 in SPARCL™ assays. Its performance in ELISA is being investigated. Call or email for pricing.

Horse CRP – added February 17, 2020
We now manufacture horse CRP (8108). CRP is an acute phase protein. Its levels increase during bacterial infections and inflmmatory conditions. It is available as 0.1 mg ($320) and 1 mg ($1600) quantities.

Cow SAA3 ELISA – added December 31, 2019
SAA3 is the isoform of serum amyloid A that is present in milk. It is sometimes referred to as milk amyoid A (MAA). Levels increase because of inflammation and infection associated with mastitis. As shown in the graph below, we find that SAA3 levels correlate with somatic cell count (SCC). Increased SCC correlate with decreased milk quality. The cow SAA3 ELISA (SAA3-11) was developed by Veterinary Biomarkers, Inc. It is simpler, faster, more sensitive (5x), and less expensive than other SAA3 ELISA kits. A single kit costs $450. Bulk discounts apply.

Dog IgA ELISA – added October 23, 2019
In addition to kits for dog IgG, IgE and IgM we now manufacture an ELISA kit for dog IgA (IGA-4).

Dog NGAL ELISA – added July 9, 2019
NGAL (neutrophil gelatinase-associated lipocalin) is a siderophore binding lipocalin. It is a positive acute phase protein; levels increase in serum and urine during chronic kidney disease and acute kidney injury. In studies at Life Diagnostics, we find that serum levels range from  5 to >140 ng/ml. The dog NGAL ELISA (NGAL-4) is manufactured by Life Diagnostics. It uses antibodies that we developed against recombinant dog NGAL. The assay is simple. Diluted serum or urine are incubated in microtiter wells for 45-min, followed by a 45-min HRP-conjugate incubation and a 20-min substrate development step. A single kit costs $450. Quantity discounts apply.

Chicken Ex-FABP ELISA – added July 9, 2019
Ex-FABP (extracellular fatty acid binding protein) is a siderophore binding lipocalin that has recently been identified as a positive acute phase protein. In studies at Life Diagnostics, we find that plasma levels range from  0.5 to 9 ug/ml. The chicken Ex-FABP ELISA (EXFABP-5) is manufactured by Life Diagnostics. It uses antibodies that we developed against recombinant chicken Ex-FABP. The assay is simple; a one-hour sample/HRP-conjugate co-incubation step followed by a 20-min substrate development step. A single kit costs $475. Quantity discounts apply.

Multi-mPEG-BSA (550 Da mPEG)- added July 2, 2019
BSA with multiple covalently attached 550 Da mPEG chains (catalog no. PBSA-00-550). Refer to the PEGylated proteins page for prices.

Chicken Hemopexin ELISA – added May 10, 2019
In studies at Life Diagnostics, we found that hemopexin levels increase up to 25-fold in chicken plasma during the acute phase response (figure below). Hemopexin therefore appears to be a major acute phase protein in chickens. The chicken hemopexin ELISA (HPX-5) is manufactured by Life Diagnostics. It uses antibodies that we developed against purified chicken hemopexin. Refer to the acute phase protein ELISA kits page for pricing.

Chicken Alpha-1-acid Glycoprotein SPARCL™ assay – added April 18, 2019
The chicken AGP SPARCL™ kit (AGP-SP-5) is an alternative to our chicken AGP ELISA (AGP-5). Both assays use the same antibody pair. For laboratories that have a suitable luminometer, the SPARCL™ assay allows simple measurement of AGP using a single-step,  30-minute assay. Refer to the SPARCL™ kits page for pricing.

Human Cardiac Fatty Acid Binding Protein (H-FABP) SPARCL™ assay – added March 6, 2019
***Research Use Only***
H-FABP can be used as a biomarker of cardiac or skeletal muscle damage. The human H-FABP SPARCL™ kit (HFABP-SP-20) allows rapid measurement of H-FABP in serum and plasma. Refer to the SPARCL™ kits page for pricing.

Dog Neutrophil Elastase (NE) SPARCL™ assay – added December 6, 2018
The dog NE SPARCL™ kit (NEL-SP-4) allows rapid measurement of NE in serum and other fluids. At Life Diagnostics, we found significantly increased levels in dogs reported as sick by veterinarians. Refer to the SPARCL™ kits page for pricing.

Human Neutrophil Elastase (NE) SPARCL™ assay – added December 5, 2018
The human NE SPARCL™ kit (NEL-SP-20) is an alternative to the human NE ELISA. For laboratories that have a suitable luminometer, it allows simple measurement of NE using a single-step,  30-minute assay. Refer to the SPARCL™ kits page for pricing.

Human Neutrophil Elastase (NE) ELISA  – added December 3, 2018
Neutrophil elastase is a serine protease that is secreted by neutrophils. While not a classic acute phase protein, its levels increase during infection and inflammation. Our NE ELISA (NEL-20) allows simple and quantitative measurement of NE. Refer to the acute phase protein ELISA kits webpage for pricing.

Cow Serum Amyloid A – added May 18, 2018
We now offer purified cow serum amyloid A (SAA) (9007). SAA is an acute phase protein that increases >100-fold in cow serum during infection and inflammatory diseases.

Cat LRG1 SPARCL Kit – added March 26, 2018
LRG1 (leucine-rich alpha-2-glycoprotein-1) is a positive acute phase protein that is elevated in serum during inflammation, infection and certain cancers (in humans). Our cat LRG1 SPARCL™ kit (LRG-SP-8) allows measurement of LRG1 in serum. Refer to  the SPARCL kits webpage page for pricing. We also manufacture pure LRG1 from humans, cats, dogs and cows as well as several human LRG1 monoclonal antibodies.

Cat and Dog Alfa-fetoprotein (AFP) SPARCL™ Kits  – added March 23, 2018
SPARCL kits for cat and dog AFP are now available (AFP-SP-8 and AFP-SP-4). AFP is a biomarker for liver cancer and other tumors. Refer to the tumor biomarker section of the  SPARCL kits webpage for pricing.

Cow Thymidine Kinase 1 SPARCL™ Kit  – added Feb 7, 2018
We recently developed a cow TK1 SPARCL™ kit (TK1-SP-11). TK1 enzyme activity has been associated with leukosis in cattle. Refer to the tumor biomarker section of the  SPARCL kits webpage for pricing.

Human CA 724- SPARCL™ Kit  – added Feb 2, 2018
CA 72-4 is a glycoprotein of ~1000 kDa that is  expressed on the surface of cancer cells. Increased levels of CA 72-4 are found in the serum of some cancer patients. The CA 72-4 SPARCL™ assay (CA72-SP-20) is available for research use. Refer to the SPARCL kits webpage for pricing.

Human CA 19-9 SPARCL™ Kit  – added Jan 31, 2018
CA 19-9 is a carbohydrate antigen (Sialyl-Lewis^A) found on the MUC1 protein that is expressed and shed from some tumor cells. Increased serum levels of CA 19-9 may be associated with pancreatic and gastrointestinal cancer. The CA 19-9 SPARCL™ assay (CA19-SP-20) is available for research use. Refer to the SPARCL kits webpage for pricing. A SPARCL™ kit for cat CA 19-9 is in development.

Human CYFRA 21-1 SPARCL™ Kit  – added Jan 26, 2018
CYFRA 21-1 is a fragment of cytokeratin 19 produced by proteolysis in malignant tissues. It is used as a serum biomarker for some types of cancer. Our rapid and sensitive SPARCL™ assay for human CYFRA 21-1 (CYFR-SP-20) is available for research use. Refer to the SPARCL kits webpage for pricing. A SPARCL™ kit for dog CYFRA 21-1 is in development.

Cat Thymidine Kinase 1 SPARCL™ Kit  – added Jan 23, 2018
A cat TK1 SPARCL™ kit is now available (TK1-SP-8). TK1 has potential as a serum biomarker for lymphoma in cats. In studies at Life Diagnostics, we found serum levels ranging from 0 – 95 ng/ml in samples from cats reported as sick by veterinarians. Our TK1 SPARCL™ assays are significantly faster and easier than ELISA and radiometric TK1 assays. They use a single 30-min incubation and require no wash steps. Refer to the SPARCL kits webpage for pricing.

Dog and Human Thymidine Kinase 1 SPARCL™ Kits  – added Jan 19, 2018
We recently made several mouse monoclonal antibodies for thymidine kinase 1. Using HRP and acridan conjugates of the antibiodies we have developed SPARCL kits for dog (TK1-SP-4) and human TK1 (TK1-SP-20). TK1 is a useful serum biomarker for cancer in humans and dogs. Refer to the SPARCL kits webpage for pricing. An ELISA kit for human TK1 is in development.

Cat Ceruloplasmin ELISA Kit – added Dec 04, 2017
Our cat ceruloplasmin ELISA kit (CER-8) complements the SPARCL™ kit described below. It allows measurement of ceruloplasmin in cat serum and plasma. Refer to the acute phase protein ELISA kits webpage for pricing.

Cat Ceruloplasmin SPARCL™ Kit – added Nov 28, 2017
Ceruloplasmin is a copper transport protein that behaves as a positive acute phase reactant in cats. Serum levels increase upto 8-fold. In contrast to other assays for ceruloplasmin, the cat ceruloplasmin SPARCL assay (CER-SP-8) measures protein mass, not the oxidase activity. As with our other acute phase protein SPARCL kits, this assay requires a single no-wash, 30-min incubation. Refer to the SPARCL kits webpage for pricing.

Human LRG1 Antibodies – added October 18, 2017
We have just finished development of three human LRG1 antibodies, two  mouse monoclonals (LRG1-20-8G10 and LRG1-20-13H5) and a rabbit polyclonal (LRG1-20-RB). Both monoclonals pair well with the rabbit polyclonal antibody in immunoassays. Prices can be found on the acute phase protein antibodies page.

Biotinylated mPEG-BSA – added October 18, 2017
A biotin conjugate of 20 kDa mono-mPEGylated BSA is now available (catalog no. PBSA-01-BT). Refer to the PEGylated proteins page for prices.

Human Leucine-rich alpha-2-glycoprotein-1 (LRG1) ELISA Kit – added October 10, 2017
LRG1 is a positive acute phase protein that is elevated in serum during inflammation, infection and certain cancers. Our human LRG1 ELISA kit (LRG-20) allows measurement of LRG1 in serum, plasma and other fluids. Refer to  the acute phase protein ELISA kits page for pricing. We also manufacture pure LRG1 from humans, cats, dogs and cows as well as several human LRG1 monoclonal antibodies.

Human IgG ELISA Kit for PK studies – added October 10, 2017
Our human IgG ELISA kit (IGG-20) is intended for measurement of human IgG in mouse, rat, dog and monkey serum. It compliments our human IgG SPARCL assay (IGG-SP-20). Refer to the Immunoglobulin ELISA kits page for pricing.

Dog Ceruloplasmin ELISA Kit – added September 21, 2017
We recently purified dog ceruloplasmin and made antibodies. These were used to develop the dog ceruloplasmin ELISA kit (catalog number CER-4). Ceruloplasmin is present normal dog serum at concentrations of ~0.1 mg/ml. Levels increase 3-fold or more during the acute phase response. Pricing for the ELISA kit can be found on our acute phase protein ELISA kits page.

Cat CRP SPARCL™ Kit – added August 29, 2017
The cat CRP SPARCL kit (CRP-SP-8) allows rapid measurement of CRP in cat serum and plasma. CRP is generally considered to be a poor acute phase protein in cats. In studies at Life Diagnostics however, we found CRP levels ranging from 42 ug/ml in serum from healthy cats to 360 ug/ml in serum from sick cats. Pricing for thr kit can be found on the SPARCL kits page.

Dog IgE SPARCL™ Kit – added July 18, 2017
The dog IgE SPARCL kit (IGE-SP-4) uses two of our recently developed monoclonal antibodies (see below). It allows rapid measurement of IgE levels in dog serum and plasma. Pricing can be found on the SPARCL kits page.

Anti-dog IgE monoclonals – added July 17, 2017
We have recently developed two anti-dog IgE monoclonal antibodies: IGE-4-4D1 and IgE-4-13H5. They can be used as a pair to develop ELISA and SPARCL assays for measurement of IgE in dog serum and plasma. The antibodies were developed by Life Diagnostics. We purify them under gentle conditions from serum-free media, avoiding low-pH elution steps that often partially denature antibodies. They are priced at $500/mg.

Monkey Leucine-rich alpha-2-glycoprotein-1 (LRG1) SPARCL™ Kit – added July 10, 2017
LRG1 is a positive acute phase protein that is elevated in human serum during inflammation and infection. It may also be a positive acute phase reactant in monkeys. The monkey LRG1 SPARCL™ kit (LRG-SP-3) allows measurement of LRG1 using a single 30-minute incubation. The kit uses antibodies and monkey LRG1 manufactured by Life Diagnostics. Please refer to  the SPARCL kits webpage for pricing.

Human Leucine-rich alpha-2-glycoprotein-1 (LRG1) SPARCL™ Kit – added June 27, 2017
LRG1 is a positive acute phase protein that is elevated in serum during inflammation and infection. Our human LRG1 SPARCL™ kit (LRG-SP-20) allows measurement of LRG1 using a single 30-minute incubation. Unlike ELISA assays that take much longer, it requires no wash steps. Refer to  the SPARCL kits webpage for pricing.

Cat IgE  SPARCL™ Kit – added May 15, 2017
IgE is a useful biomarker for allergen-related diseases. Our cat IgE SPARCL™ assay (IGE-SP-8) allows rapid (30-min) measurement of IgE in cat serum and plasma. Please refer to our SPARCL™ kits page for pricing.

Cat LRG1 – added May 10, 2017
LRG1 (leucine rich alpha 2 glycoprotein-1) is a glycosylated serum protein. In humans, it is an acute phase protein that is upregulated in various cancers, rheumatoid arthritis and Kawasaki disease. Cat LRG1 (catalog no. 9060) is available in 0.1 mg aliquots, priced at $500. We are currently making antibodies and plan to make SPARCL and ELISA kits for detection of human, cow, cat and dog LRG1.

Human LRG1 – added May 10, 2017
LRG1 (leucine rich alpha 2 glycoprotein-1) is a glycosylated serum protein. In humans, it is an acute phase protein that is upregulated in various cancers, rheumatoid arthritis and Kawasaki disease. Human LRG1 (catalog no. 9050) is available in 0.1 mg and 1 mg aliquots, priced at $250 and $2000 respectively.

Cow LRG1 – added May 5, 2017
LRG1 (leucine rich alpha 2 glycoprotein-1) is a glycosylated serum protein. In humans, it is an acute phase protein that is upregulated in various cancers, rheumatoid arthritis and Kawasaki disease. Cow LRG1 (catalog no. 9040) is available in 0.1 mg and 1 mg aliquots, priced at $250 and $2000 respectively.

Dog LRG1 – added May 4, 2017
LRG1 (leucine rich alpha 2 glycoprotein-1) is a glycosylated serum protein. In humans, it is an acute phase protein that is upregulated in various cancers and diseases. It may serve as a useful biomarker in dogs also. We offer native dog LRG1 (catalog no. 9030) in 0.1 mg and 1 mg aliquots, priced at $250 and $2000 respectively.

Human Lactoferrin SPARCL™ Kit – added April 26, 2017
Lactoferrin is an iron-binding glycoprotein found in milk, serum, saliva and urine. Our human lactoferrin SPARCL™ kit (LF-SP-20) allows measurement of lactoferrin using a single 30-minute incubation. Unlike ELISA assays that take much longer, it requires no wash steps. Refer to  the SPARCL kits webpage for pricing.

Cat Serum Amyloid A (SAA)  SPARCL™ Kit – added April 25, 2017
SAA is a positive acute phase protein in cats. Its serum concentrations can increase >50 fold during inflammation and disease.  Similar to CRP in dogs, SAA serves as an excellent acute phase biomarker in cats (CRP is not an acute phase reactant in cats). Refer to the SPARCL kits webpage for pricing of the cat SAA SPARCL™ kit (SAA-SP-8).

Monkey and Dog Lactoferrin SPARCL™ Kits – added April 17, 2017
Lactoferrin is an iron-binding glycoprotein found in milk and serum. In humans, it is used as a biomarker of IBS. It may prove similarly useful in monkeys and dogs. Pricing of our dog (LF-SP-4) and monkey (LF-SP-3) lactoferrin kits can be found on the SPARCL kits webpage.

Rat Murinoglobulin SPARCL™ Kit – added April 12, 2017
Murinoglobulin is a negative acute phase reactant in rats; serum levels decrease during inflammation and infection. The rat murinoglobulin SPARCL™ kit (MUR-SP-2) allows rapid measurement of murinoglobulin in serum or plasma.  Pricing can be found on our SPARCL kits webpage.

Monkey Transthyretin SPARCL™ Kit – added April 6, 2017
The monkey transthyretin kit (TTR-SP-3) allows rapid measurement of transthyretin (also known as prealbumin) in serum and plasma. Transthyretin is a negative acute phase reactant; serum levels decrease as a result of inflammation and infection. Pricing can be found on our SPARCL kits webpage.

Dog Ceruloplasmin SPARCL™ Kit – added March 24, 2017
The dog ceruloplasmin kit (CER-SP-4) allows measurement of ceruloplasmin in serum and plasma using a rapid, non-enzyamatic, luminescence assay. Pricing can be found on our SPARCL kits webpage. The kit is for research use only.

Rat, Cat, Dog & Monkey Cystatin-C SPARCL™ Kits – added March 13-17, 2017
SPARCL™ assays for rat, cat and dog and monkey cystatin-C (CYSC-SP-2, CYSC-SP-8, CYSC-SP-4 and CYSC-SP-3) are now available. Cystatin-C is a biomarker of kidney function. Prices can be found on our SPARCL kits webpage.

Testosterone SPARCL™ Kit – added January 3, 2017
The testosterone SPARCL™ assay (TEST-SP) is a competitive assay that allows measurement of testosterone in serum, urine and saliva using a single 30-minute incubation step. Pricing can be found on our SPARCL kits webpage. The kit is for research use only.

Human IgG SPARCL™ Kit – added December 5, 2016
The human IgG SPARCL™ kit (IGG-SP-20) is intended for use in PK studies. It allows measurement of human IgG in mouse, rat, dog and monkey serum. Pricing can be found on our SPARCL kits webpage. The kit is for research use only.

Cortisol SPARCL™ Kit – added November 18, 2016
This assay is our first small molecule SPARCL™ assay (CORT-SP). It is a competitive assay. Cortisol in the sample competes for binding of HRP-cortisol to an acridan labelled cortisol antibody. The assay allows measurement of total cortisol in serum, saliva and urine. Pricing can be found on our SPARCL kits webpage. The kit is for research use only.

SPARCL™ Video – added November 4, 2016
Check out our new video that highlights the technology used in our SPARCL™ kits.

Human Haptoglobin SPARCL™ Kit – added October 26, 2016
The kit allows rapid measurement of haptoglobin serum and plasma (HAPT-SP-20). Pricing can be found on our SPARCL kits webpage. The kit is for research use only.

Human Serum Amyloid A (SAA) – added October 22, 2016
Using our recently developed human SAA SPARCL™ kit we screened 90 human acute phase fluid samples and identified units with sufficiently high SAA levels to allow purification. The SAA (catalog# 9006) is highly purified, migrating as a single ~12 kDa band on SDS PAGE. It can be used in western blots, for antibody production, or to prepare assay controls and calibrators. Refer to our acute phase protein page for pricing.

Monkey SAA SPARCL™ Kit – added October 19, 2016
The kit allows rapid measurement of SAA in monkey serum and plasma (SAA-SP-3). Because SAA binds strongly to lipoproteins that interfere with SAA measurement, samples must be briefly treated with dissociation buffer (provided with the kit) prior to assay. Whereas ELISA kits take 2-4 hours, the SPARCL™ assay can be completed in one hour, including the dissociation step. Pricing can be found on our SPARCL kits webpage.

Human SAA SPARCL™ Kit – added October 18, 2016
The kit allows rapid measurement of SAA in serum, plasma or fluid samples (SAA-SP-20). Because SAA binds strongly to lipoproteins that interfere with SAA measurement, samples must be briefly treated with dissociation buffer (provided with the kit) prior to assay. Whereas ELISA kits take 2-4 hours, the SPARCL™ assay can be completed in one hour, including the dissociation step. Pricing can be found on our SPARCL kits webpage. The kit is for research use only.

Cow Lactoferrin SPARCL™ Kit – added October 12, 2016
Lactoferrin is an anti-bacterial protein of ~80 kDa. Its levels increase in serum and milk during infection and disease. It has been reported to be a useful biomarker of mastitis. Kit LF-SP-11 allows rapid measurement of lactoferrin in serum and milk. Refer to the SPARCL kits webpage for procing.

Human CRP SPARCL™ Kits – added October 10, 2016
SPARCL™ kits are available for measurement of C-reactive protein in serum (CRP-SP-20) and saliva (CRPS-SP-20). Whereas ELISA kits take 2-4 hours, require multiple incubations and wash steps, SPARCL™ assays require a single 30-minute incubation and no wash steps. Prices can be found on our SPARCL kits webpage. The kits are for research use only.

Cow Alpha-1-Acid Glycoprotein SPARCL™ Kit – added October 7, 2016
The cow AGP SPARCL kit (AGP-SP-11) allows rapid measurement of AGP, a positive acute phase reactant, in serum, plasma and milk. We found that serum AGP levels increase >8-fold. As a result of mastitis, AGP levels in milk can increase >300-fold. Prices can be found on our SPARCL kits webpage.

Rat Alpha-1-Acid Glycoprotein SPARCL™ Kit – added September 27, 2016
The rat AGP SPARCL kit (AGP-SP-2) allows rapid measurement of AGP, a positive acute phase reactant, in serum and plasma. Prices can be found on our SPARCL kits webpage.

Goat IgG and IgM SPARCL™ Kits – added September 19, 2016
SPARCL™ kits are now available for goat IgG (IGG-SP-13) and IgM (IGM-SP-13). Prices can be found on our SPARCL kits webpage.

Rabbit IgG and IgM SPARCL™ Kits – added September 16, 2016
SPARCL™ kits are now available for rabbit IgG (IGG-SP-10) and IgM (IGM-SP-10). Prices can be found on our SPARCL kits webpage.

Horse IgA, IgG and IgM SPARCL™ Kits – added September 14, 2016
SPARCL™ kits are now available for horse IgA (IGA-SP-14), IgG (IGG-SP-14) and IgM (IGM-SP-14). Prices can be found on our SPARCL kits webpage.

Cow IgG and IgM  SPARCL™ Kits – added September 8, 2016
SPARCL™ kits are now available for cow IgG (IGG-SP-11) and IgM (IGM-SP-11). Pricing can be found on our SPARCL kits webpage.

Cow IgA SPARCL™ Kit – added September 4, 2016
IGA-SP-11. Pricing can be found on our SPARCL kits webpage.

Dog IgM SPARCL™ Kit – added August 17, 2016
IGM-SP-4. Pricing can be found on our SPARCL kits webpage.

Dog Procalcitonin SPARCL™ Kit – added August 12, 2016
Procalcitonin (PCT) is a potential biomarker for sepsis and other bacterial infections in dogs. Our dog PCT SPARCL™ assay (PCT-SP-4) is for research use only. It allows rapid measurement of PCT levels in dog serum. Pricing can be found here.

PEG SPARCL™ Kit – added August 6, 2016
We now manufacture a SPARCL kit (PEG-SP) for detection of PEG and PEGylated proteins. This assay is different than our MPEG-SP kit in that it detects free PEG and PEGylated proteins with different terminal end groups. The assay uses acridan and HRP conjugates of the PEG-backbone specific antibody (1D9-6) developed at Life Diagnostics. The assay uses a rapid (30 min) luminescence format that requires no wash steps. Pricing can be found on our PEG SPARCL™ kits webpage.

Methoxy-PEG SPARCL™ Kit – added July 28, 2016
We now manufacture a SPARCL kit (MPEG-SP) for detection of methoxy-PEG (mPEG) and mPEGylated proteins. The assay uses a methoxy-specific monoclonal antibody conjugated to HRP and a PEG-backbone specific antibody conjugated to acridan. Both antibodies are manufactured exclusively by Life Diagnostics. The assay uses a rapid (30 min) luminescence format that requires no wash steps. Pricing can be found on our PEG SPARCL™ kits webpage.

Rat IgA SPARCL™ Kit – added July 26, 2016
IGA-SP-2

Rat IgM SPARCL™ Kit – added July 21, 2016
IGM-SP-2

Rat IgG SPARCL™ Kit – added July 20, 2016
A Rat IgG SPARCL kit is now available: IGG-SP-2

Mouse IgG2b and IgG3 SPARCL™ Kits – added July 19, 2016
Mouse IgG2b (IGG2B-SP-1) and IgG3 (IGG3-SP-1) SPARCL kits are now available.

Mouse IgG2a SPARCL™ Kit – added July 8, 2016
A Mouse IgG2a SPARCL kit is now available: IGG2A-SP-1

Mouse IgG1 SPARCL™ Kit – added June 30, 2016
A Mouse IgG1 SPARCL kit is now available: IGG1-SP-1

Mouse IgM SPARCL™ Kit – added June 28, 2016
Mouse IgM SPARCL kit: IGM-SP-1

Mouse IgG SPARCL™ Kit – added June 25, 2016
A Mouse IgG SPARCL kit is now available: IGG-SP-1

Monkey IgE SPARCL™ Kit – added June 14, 2016
A SPARCL version of our Monkey IgE ELISA kit is now available: IGE-SP-3

Monkey IgA SPARCL™ Kit – added June 13, 2016
A SPARCL version of our Monkey IgA ELISA kit is now available: IGA-SP-3

Horse SAA SPARCL™ Kit – added June 7, 2016
A SPARCL version of our horse SAA ELISA kit is now available: SAA-SP-14

Monkey IgG and IgM SPARCL™ Kits – added May 27, 2016
Monkey IgG (IGG-SP-3) and IgM (IGM-SP-3) SPARCL kits have been added to our website. They allow measurement of the respective immunoglobulins using simple, 30-minute, no-wash immunoassays.

SPARCL™ Kits – added May 12, 2016
Since November, 2015 the staff at LDI have been busy developing SPARCL™ versions of our ELISA kits. SPARCL™ technology (Spatial Proximity Analyte Reagent Capture) was developed by Lumigen Corp. We are very pleased to announce that Lumigen has granted Life Diagnostics exclusive rights to manufacture SPARCL versions of our ELISA kits. Thus far, we have made 35 kits. They are listed on our SPARCL kits webpage. More are in development.

SPARCL™ assays use two antibodies. One is conjugated to HRP, the second to acridan, a chemiluminescent substrate. When HRP and acridan conjugated antibodies both bind to their target antigen they are brought into close proximity. With the addition of hydrogen peroxide, HRP catalyzes oxidation of proximal acridan molecules causing a flash of chemiluminescence that is proportional to antigen concentration. Acridan conjugated antibodies distant from HRP produce no signal. The technology allows  development of rapid, no-wash, homogeneous immunoassays.

In a typical SPARCL™ assay a mixture of acridan and HRP conjugates is first pipetted into wells of a white 96-well SPARCL™ plate. Diluted samples and standards are then added. After a 30-minute incubation the plate is placed into a luminometer. Luminescence is measured after injection of trigger solution containing hydrogen peroxide, into each well. Assuming 15-minutes preparation and 5-minutes analysis time, the entire assay is complete within 50-minutes. This contrasts with ELISA’s that take 2 – 4+ hours, require 2-4 incubations and 1-3 wash steps.

SPARCL assays require a luminometer capable of simultaneous injection (only one injector is required) and measurement of luminescence. A list of suitable luminometers may be found here.

I have been developing ELISA’s since 2003 and have used them extensively for many years prior to that. I spent the last few months developing our SPARCL™ kits. I am very impressed with their simplicity and speed compared to ELISA.

Christopher Chadwick PhD
President
Life Diagnostics, Inc.

Products in Development – Please inquire regarding availability
– Multiplex assays for animal acute phase proteins, cardiovascular biomarkers and immunoglobulins.