Human Haptoglobin Quantikine ELISA Kit

  • Assay Type
    Solid Phase Sandwich ELISA
  • Format
    96-well strip plate
  • Assay Length
    4.5 hours
  • Sample Type & Volume Required Per Well
    Serum-free Cell Culture Supernates (20 uL), Serum (10 uL), EDTA Plasma (10 uL), Heparin Plasma (10 uL), Saliva (10 uL), Urine (20 uL)
  • Sensitivity
    0.529 ng/mL
  • Assay Range
    3.1 - 200 ng/mL (Serum-free Cell Culture Supern, Serum, EDTA Plasma, Heparin Plasma, Saliva, Urine)
  • Specificity
    Natural human haptoglobin
  • Cross-reactivity
    < 0.5% cross-reactivity observed with available related molecules.< 50% cross-species reactivity observed with species tested.
  • Interference
    No significant interference observed with available related molecules.
Product Summary
The Quantikine Human Haptoglobin Immunoassay is a 4.5 hour solid phase ELISA designed to measure haptoglobin in serum-free cell culture supernates, serum, plasma, saliva, and urine

Intra-Assay Precision (Precision within an assay) Three samples of a known concentration were tested on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays) Three samples of a known concentration were tested in separate assays to determine inter-assay precision. Assays were performed by at least three technicians using two lots of kit components.
Serum-free Cell Culture Supern, Serum, EDTA Plasma, Heparin Plasma, Saliva, Urine
Intra-Assay Precision Inter-Assay Precision
Standard Deviation0.691.423.661.43.476.3


The recovery of human haptoglobin spiked to levels throughout the range of the assay was evaluated.

Sample Type Average % Recovery Range %
Serum-free Cell Culture Media (n=4) 101 94-107
To assess the linearity of the assay, samples containing and/or spiked with high concentrations of human haptoglobin were serially diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.
Human Haptoglobin Quantikine ELISA Kit
Preparation and Storage
  • Storage
    Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Background: Haptoglobin
Haptoglobin is an acute phase glycoprotein that is an inactive member of the peptidase S1 family of serine proteases. It is secreted by multiple cell types and binds with high affinity to circulating Hemoglobin. Association of Haptoglobin with free Hemoglobin protects tissues from Hemoglobin-mediated oxidative damage and facilitates Hemoglobin clearance. In addition, Haptoglobin has anti-inflammatory properties that are independent of Hemoglobin binding. It inhibits prostaglandin synthesis, scavenges nitric oxide, dampens the inflammatory response to endotoxins, and inhibits T cell proliferation and neutrophil respiratory bursts. Deletion of Haptoglobin in mice facilitates the development of autoimmune inflammation.
    • Entrez Gene IDs
      3240 (Human); 15439 (Mouse); 24464 (Rat);
    • Alternate Names
      binding peptide; BP; haptoglobin alpha(1S)-beta; haptoglobin alpha(2FS)-beta; haptoglobin; haptoglobin, alpha polypeptide; haptoglobin, beta polypeptide; HP; HP-1; hp2-alpha; HP2ALPHA2; HPA1S; MGC111141;
    Related Research Areas
    Assay Procedure
    Refer to the product for complete assay procedure.

    Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate.
    1.   Prepare all reagents, standard dilutions, and samples as directed in the product insert.
    2.   Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.

    3. 200 µL Assay Diluent
    4.   Add 200 µL of Assay Diluent to each well.

    5. 20 µL Standard, Control, or Sample
    6.   Add 20 µL of Standard, control, or sample to each well. Cover with a plate sealer, and incubate at room temperature for 2 hours on a horizontal orbital microplate shaker.
    7.   Aspirate each well and wash, repeating the process 3 times for a total of 4 washes.

    8. 200 µL Conjugate
    9.   Add 200 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours on the shaker.
    10.   Aspirate and wash 4 times.

    11. 200 µL Substrate Solution
    12.   Add 200 µL Substrate Solution to each well. Incubate at room temperature for 30 minutes on the benchtop. PROTECT FROM LIGHT.

    13. 50 µL Stop Solution
    14.   Add 50 µL of Stop Solution to each well. Read at 450 nm within 30 minutes. Set wavelength correction to 540 nm or 570 nm.
    Supplemental ELISA Products
    Description Application Cat# Citations Images  

    Quantikine Wash Buffer 1

    ELISA WA126 5
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