Immunoassay Reagents and Kits

Kits, substrates, and reagents for a variety of immunoassay procedures, including ELISA, singleplex immunoassays, and multiplex immunoassays, that are ideal for the quantification of target antigens; substrates available in colorimetric, chemiluminescent, or chemifluorescent varieties.

We offer a variety of products for enzyme-linked immunosorbent assays (ELISA or EIA) including plates, reagents, and kits to help you detect and quantify peptides, proteins, antibodies, and hormones.

ELISA is an analytical method based on the highly specific interaction between an antigen and an antibody. For this assay, an antigen is attached to a solid surface, to which an antibody-enzyme complex is linked. When a substrate is added and incubated with the other materials, it produces a measurable product.

Life Science Research ELISA Kits (85,478)

Singleplex and Multiplex Bead Based Immunoassays (5,718)

ELISA Substrates and Reagents (2,191)

61 – 75 of 90,908 results

R&D Systems™ Human IL-12 p70 Quantikine ELISA Kit

Human IL-12 p70 Quantikine ELISA Kit from the most referenced ELISA manufacturer. Highly validated for accurate quantitation and long-term reproducibility.

Pricing & Availability
Specifications

Specificity	Natural and Recombinant Human IL-12p70
Target Species	Human
Conjugate	HRP
Product Type	Solid Phase Sandwich ELISA
Gene ID (Entrez)	3592
Sample Type	Cell Culture Supernatant,Plasma (EDTA, Citrate, Heparin),Serum,Urine
Sample Volume	Cell Culture Supernates (200uL),Serum (200uL),EDTA Plasma (200uL),Heparin Plasma (200uL),Citrate Plasma (200uL),Urine (200uL)
Synonym	CLMF p35, Cytotoxic lymphocyte maturation factor 35 kDa subunit, IL12 p70, IL-12 subunit p35, IL-12, subunit p35, interleukin 12, p35, interleukin 12 A (natural killer cell stimulatory factor 1, cytotoxic lymphocytematuration factor 1, p35), interleukin-12 alpha chain, interleukin-12 subunit alpha, natural killer cell stimulatory factor 1, 35 kD subunit, NF cell stimulatory factor chain 1, NK cell stimulatory factor chain 1, NKSF1, p35
Assay Sensitivity	5pg/mL
Storage Requirements	Store the unopened product at 2° to 8°C. Do not use past expiration date.
Assay Range	7.80 - 500pg/mL
For Use With (Application)	ELISA
Cross Reactivity	<50% cross-species reactivity observed with species tested. <0.5% cross-reactivity observed with available related molecules

Invitrogen™ Human Galectin-9 ELISA Kit

ELISA

Pricing & Availability
Specifications

Conjugate	HRP
Interassay CV	<12%
Intraassay CV	<10
Gene Symbol	Lgals9
Total Assay Time	4 hrs 45 mins
Sample Volume	Plasma 50 μL, Serum 50 μL, Supernatant 50 μL
Assay Sensitivity	36 pg/mL
Storage Requirements	2°C to 8°C
Assay Range	36.86 to 9,000 pg/mL
Test Time	1 hrs 20 mins
Accession Number	36 kDa beta-galactoside-binding lectin; AA407335; AI194909; AI265545; Ecalectin; Gal9; gal-9; galectin 9; Galectin9; galectin-9; HOM HD 21; HUAT; Lectin galactose binding soluble 9 (Galectin-9); lectin, galactose binding, soluble 5; lectin, galactose binding, soluble 9; Lectin, galactose binding, soluble 9 (Galectin-9); lectin, galactoside binding soluble 9; lectin, galactoside-binding, soluble, 9; LGALS35; Lgals5; LGALS9; LGALS9A; Tumor antigen HOM-HD-21; UAT; Urate transporter/channel; urate transporter/channel protein
Regulatory Status	RUO
Target	Galectin 9
Kit Contents	Pre-coated 96 well plate,Standard,Assay Diluent concentrate,Biotinylated Detection Antibody,SAV-HRP,Wash Buffer,Chromogen,Stop Solution,Adhesive Plate Covers
For Use With (Equipment)	Colorimetric Microplate Reader
Product Type	ELISA
Gene ID (Entrez)	3965
Sample Type	Plasma,Serum,Supernatant
Label or Dye	HRP

Invitrogen™ Human GFAP ELISA Kit

ELISA

Pricing & Availability

R&D Systems™ Human Lipocalin-2/NGAL Quantikine ELISA Kit

Human Lipocalin-2/NGAL Quantikine ELISA Kit from the most referenced ELISA manufacturer. Highly validated for accurate quantitation and long-term reproducibility.

Pricing & Availability
Specifications

Specificity	Natural and Recombinant Human Lipocalin-2
Target Species	Human
Conjugate	HRP
Product Type	Solid Phase Sandwich ELISA
Gene ID (Entrez)	3934
Sample Type	Cell Culture Supernatant,Plasma (Heparin),Saliva,Serum,Urine
Sample Volume	Cell Culture Supernates (50uL),Serum (50uL),Heparin Plasma (50uL),Saliva (50uL),Urine (50uL)
Synonym	24p3, 25 kDa alpha-2-microglobulin-related subunit of MMP-9, HNL, LCN2, lipocalin 2, lipocalin 2 (oncogene 24p3), Lipocalin2, Lipocalin-2, migration-stimulating factor inhibitor, MSFI, neutrophil gelatinase-associated lipocalin, NGAL, NGALlipocalin-2, Oncogene 24p3, p25, Siderocalin, Uterocalin
Assay Sensitivity	0.04ng/mL
Storage Requirements	Store the unopened product at 2° to 8°C. Do not use past expiration date.
Assay Range	0.16 - 10ng/mL
For Use With (Application)	ELISA
Cross Reactivity	<50% cross-species reactivity observed with species tested. <0.5% cross-reactivity observed with available related molecules.

Invitrogen™ Thyroxine (T4) Competitive ELISA Kit

ELISA

Pricing & Availability
Specifications

Target Species	Human
Conjugate	HRP
Description	Thyroxine (T4) Competitive ELISA Kit
Interassay CV	7%
Intraassay CV	3
Total Assay Time	1 hrs 30 mins
Sample Volume	Fecal Extract 10 μL, Plasma 1 μL, Serum 1 μL, Supernatant 10 μL, Urine 2.5 μL
Assay Sensitivity	0.29 ng/mL
Storage Requirements	-20°C
Research Discipline	Metabolism
Assay Range	0.625 to 20 ng/mL
For Use With (Application)	ELISA, Protein Assays, Aktivity Assays, Protein Biology, Reproductive Biology, Inflammation, Oxidative Stress, Metabolism, Cell Signaling, Epigenetics, Hematology, DNA Damage, Cancer Biology, Immunology, Neuroscience, Neurobiology, Steroid Hormone Detecti
Test Time	1 hrs 20 mins
Detection Method	Fluorescence
Regulatory Status	RUO
Target	Thyroxine (T4)
Kit Contents	Pre-coated 96 well plate,Standard,Assay Diluent concentrate,HRP-Conjugated Detection Antibody,Wash Buffer,Chromogen,Stop Solution,Adhesive Plate Covers
For Use With (Equipment)	Colorimetric Microplate Reader
Product Type	ELISA
Sample Type	Fecal Extract,Plasma,Serum,Supernatant,Urine
Label or Dye	HRP

Invitrogen™ Rat Growth Hormone ELISA Kit

ELISA

Pricing & Availability

Invitrogen™ PKA (Protein Kinase A) Colorimetric Activity Kit

Assay PKA (Protein Kinase A) Activity in Cell Lysates, Tissue Extracts and Buffer Samples.

Pricing & Availability
Specifications

Shipping Condition	Approved for shipment on Wet or Dry Ice
Immunoassay Kit Format	Assay Activity Kit
Content And Storage	96-well plate(s), standard, detection reagent, assay buffer, substrate, and lot-specific technical data sheet. Store at –20°C.
For Use With (Equipment)	Microplate Reader
Target Kit Named	PKA (Protein Kinase A)

Invitrogen™ Mouse S100A8/S100A9 ELISA Kit

ELISA

Pricing & Availability
Specifications

Conjugate	HRP
Interassay CV	<12%
Intraassay CV	<10
Gene Symbol	S100A8, S100A9
Total Assay Time	4 hrs 45 mins
Sample Volume	Plasma 50 μL, Serum 50 μL, Supernatant 50 μL
Assay Sensitivity	0.65 ng/mL
Storage Requirements	2°C to 8°C
Assay Range	0.65 to 150 ng/mL
Test Time	1 hrs 20 mins
Accession Number	60B8Ag; AI323541; AW546964; B8Ag; BEE11; BEE22; Caga; Cagb; calgranulin A; calgranulin B; calgranulin-A; Calgranulin-B; calprotectin; calprotectin L1H subunit; Calprotectin L1L subunit; CFAG; CGLA; CGLB; Chemotactic cytokine CP-10; chemotactic S100 protein; CP-10; Cystic fibrosis antigen; EGK
Regulatory Status	RUO
Target	Calprotectin
Kit Contents	Pre-coated 96 well plate,Standard,Assay Diluent concentrate,Biotinylated Detection Antibody,SAV-HRP,Wash Buffer,Chromogen,Stop Solution,Adhesive Plate Covers
For Use With (Equipment)	Colorimetric Microplate Reader
Product Type	ELISA
Gene ID (Entrez)	20201, 20202
Sample Type	Plasma,Serum,Supernatant
Label or Dye	HRP

Invitrogen™ Superoxide Dismutase (SOD) Colorimetric Activity Kit

Assay Superoxide Dismutase (SOD) Activity in Serum, Plasma, Cells, Tissues and Erythrocyte Lysates.

Pricing & Availability
Specifications

Shipping Condition	Approved for shipment on Wet or Dry Ice
Immunoassay Kit Format	Assay Activity Kit
Content And Storage	96-well plate(s), standard, detection reagent, assay buffer, substrate, and lot-specific technical data sheet. Store at –20°C.
For Use With (Equipment)	Microplate Reader
Target Kit Named	Superoxide Dismutase (SOD)

Invitrogen™ Human ALKP ELISA Kit

ELISA

Pricing & Availability
Specifications

Conjugate	HRP
Interassay CV	<12%
Intraassay CV	<10
Gene Symbol	ALPL
Total Assay Time	4 hrs 45 mins
Sample Volume	Plasma 50 μL, Serum 50 μL, Supernatant 50 μL
Assay Sensitivity	2 mIU/mL
Storage Requirements	2°C to 8°C
Assay Range	2 to 500 mIU/mL
Test Time	1 hrs 20 mins
Accession Number	Akp2; Akp-2; Alkaline phosphatase 2; alkaline phosphatase 2, liver; alkaline phosphatase liver/bone/kidney isozyme; alkaline phosphatase precursor (EC 3.1.3.2); alkaline phosphatase tissue non-specific isoform; alkaline phosphatase tissue non-specific isoform/TNS-AP; alkaline phosphatase, biomineralization associated; alkaline phosphatase, liver/bone/kidney; alkaline phosphatase, tissue-nonspecific isozyme; Alpl; APTNAP; AP-TNAP; FLJ40094; FLJ93059; glycerophosphatase; HOPS; liver/bone/kidney isozyme; liver/bone/kidney-type alkaline phosphatase; MGC161443; MGC167935; PHOA; tissue-nonspecific alkaline phosphatase; tissue-nonspecific ALP; Tissue-nonspecific ALP alkaline phosphatase; TNAP; TNSALP; TNS-AP
Regulatory Status	RUO
Target	ALPL
Kit Contents	Pre-coated 96 well plate,Standard,Assay Diluent concentrate,Biotinylated Detection Antibody,SAV-HRP,Wash Buffer,Chromogen,Stop Solution,Adhesive Plate Covers
For Use With (Equipment)	Colorimetric Microplate Reader
Product Type	ELISA
Gene ID (Entrez)	249
Sample Type	Plasma,Serum,Supernatant
Label or Dye	HRP

Invitrogen™ Human IL-6 ELISA Kit

ELISA

Pricing & Availability
Specifications

Immunoassay Kit Format	Colorimetric ELISA (TMB substrate) with Plates
Description	Human IL-6 ELISA Kit
Precision	Intra-assay CV <10%; inter-assay CV <10%

Invitrogen™ Rat TNF alpha ELISA Kit

ELISA

Pricing & Availability
Specifications

Target Species	Rat
Conjugate	HRP
Interassay CV	10%
Intraassay CV	5%
Total Assay Time	3 hr 10 min
Sample Volume	Serum 50 μL, Supernatant 50 μL
Assay Sensitivity	11.0 pg/mL
Storage Requirements	2-8°C
Assay Range	39.1-2500 pg/mL
For Use With (Application)	ELISA
Test Time	1 hr 20 min
Accession Number	P16599
Regulatory Status	RUO
Target	TNF alpha
Kit Contents	Pre-coated 96 well plate, Standard, Sample Diluent, Assay Buffer concentrate, Biotinylated Detection Antibody, SAV-HRP, Wash Buffer, Chromogen, Stop Solution, Adhesive Plate Covers,Standard,Sample Diluent,Assay Buffer concentrate,Biotinylated Detection Antibody,SAV-HRP,Wash Buffer,Chromogen,Stop Solution,Adhesive Plate Covers
For Use With (Equipment)	Absorbance Microplate Reader
Product Type	ELISA
Gene ID (Entrez)	24835
Sample Type	Serum,Supernatant
Label or Dye	Biotin
Synonym	Cachectin, Tumor necrosis factor alpha, DIF

Invitrogen™ Human GM-CSF ELISA Kit

ELISA

Pricing & Availability
Specifications

For Use With (Equipment)	Colorimetric Microplate Reader
Gene ID (Entrez)	1437
Interassay CV	4.8%
Intraassay CV	5.7
Assay Sensitivity	<3 pg/mL
Assay Range	7.8 to 500 pg/mL
For Use With (Application)	Colorimetric Detection

Invitrogen™ Mouse IgG1 Uncoated ELISA Kit with Plates

ELISA

Pricing & Availability
Specifications

Target Species	Mouse
Conjugate	HRP
Total Assay Time	24 hr 30 min
Sample Volume	Plasma 10 μL, Serum 10 μL, Supernatant 50 μL
Assay Sensitivity	3.13 ng/mL
Storage Requirements	2-8°C
Assay Range	3.13-200 ng/mL
For Use With (Application)	ELISA
Test Time	1 hr 45 min
Regulatory Status	RUO
Target	Mouse IgG1
Kit Contents	Capture Antibody: Pre-titrated, purified antibody, Detection Antibody: Pre-titrated, HRP-conjugated antibody, Standard: Recombinant protein for generating standard curve and calibrating samples, 10X Coating Buffer: Buffer for plating the Capture Antibody, 5X ELISA/ELISPOT Diluent: Buffer for blocking and diluting the Detection Antibody and Enzyme, Substrate: 1X TMB Solution, Certificate of Analysis: Lot-specific instructions for dilution of antibodies and standards, 96 Well Plate: High affinity 96-well plate (included with product Cat. Nos. ending in suffixes -22, -76, -86),Purified antibody,Detection Antibody: Pre-titrated,HRP-conjugated antibody,Standard: Recombinant protein for generating standard curve and calibrating samples,10X Coating Buffer: Buffer for plating the Capture Antibody,5X ELISA/ELISPOT Diluent: Buffer for blocking and diluting the Detection Antibody and Enzyme,Substrate: 1X TMB Solution,Certificate of Analysis: Lot-specific instructions for dilution of antibodies and standards,96 Well Plate: High affinity 96-well plate (included with product Cat. Nos. ending in suffixes -22, -76, -86)
For Use With (Equipment)	Absorbance Microplate Reader
Product Type	ELISA
Sample Type	Plasma,Serum,Supernatant
Label or Dye	HRP
Synonym	Immunoglobulin G1

Invitrogen™ Human IDO ELISA Kit

ELISA

Pricing & Availability
Specifications

Conjugate	HRP
Interassay CV	<12%
Intraassay CV	<10
Gene Symbol	Ido1
Total Assay Time	4 hrs 45 mins
Sample Volume	Plasma 50 μL, Serum 50 μL, Supernatant 50 μL
Assay Sensitivity	0.81 ng/mL
Storage Requirements	2°C to 8°C
Assay Range	0.819 to 200 ng/mL
Test Time	1 hrs 20 mins
Accession Number	EC 1.13.11.52; Ido; IDO1; IDO-1; Indo; indolamine 2,3 dioxygenase; indole 2,3-dioxygenase; indoleamine; indoleamine 2,3-dioxygenase 1; indoleamine 23-dioxygenase; Indoleamine-2; indoleamine-pyrrole 2,3 dioxygenase; Indoleamine-pyrrole 2,3-dioxygenase
Regulatory Status	RUO
Target	IDO
Kit Contents	Pre-coated 96 well plate,Standard,Assay Diluent concentrate,Biotinylated Detection Antibody,SAV-HRP,Wash Buffer,Chromogen,Stop Solution,Adhesive Plate Covers
For Use With (Equipment)	Colorimetric Microplate Reader
Product Type	ELISA
Gene ID (Entrez)	3620
Sample Type	Plasma,Serum,Supernatant
Label or Dye	HRP

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Immunoassay Reagents and Kits

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R&D Systems™ Human IL-12 p70 Quantikine ELISA Kit GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

R&D Systems™ Human Lipocalin-2/NGAL Quantikine ELISA Kit GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

R&D Systems™ Human IL-12 p70 Quantikine ELISA Kit

R&D Systems™ Human Lipocalin-2/NGAL Quantikine ELISA Kit