• Product name

    Human CD13 ELISA Kit
    See all CD13 kits
  • Detection method

  • Precision

    Sample n Mean SD CV%
    serum 8 4.5%
  • Sample type

    Cell culture supernatant, Serum, Hep Plasma, EDTA Plasma, Cit plasma
  • Assay type

    Sandwich (quantitative)
  • Sensitivity

    25.6 pg/ml
  • Range

    219 pg/ml - 14000 pg/ml
  • Recovery

    Sample specific recovery
    Sample type Average % Range
    Cell culture supernatant 90 % - %
    Serum 110 % - %
    Hep Plasma 107 % - %
    EDTA Plasma 90 % - %
    Cit plasma 83 % - %

  • Assay time

    1h 30m
  • Assay duration

    One step assay
  • Species reactivity

    Reacts with: Human
  • Product overview

    CD13 in vitro SimpleStep ELISA® (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of CD13 protein in human serum, plasma, and cell culture supernatant samples

    The SimpleStep ELISA® employs an affinity tag labeled capture antibody and a reporter conjugated detector antibody which immunocapture the sample analyte in solution. This entire complex (capture antibody/analyte/detector antibody) is in turn immobilized via immunoaffinity of an anti-tag antibody coating the well. To perform the assay, samples or standards are added to the wells, followed by the antibody mix. After incubation, the wells are washed to remove unbound material. TMB substrate is added and during incubation is catalyzed by HRP, generating blue coloration. This reaction is then stopped by addition of Stop Solution completing any color change from blue to yellow. Signal is generated proportionally to the amount of bound analyte and the intensity is measured at 450 nm. Optionally, instead of the endpoint reading, development of TMB can be recorded kinetically at 600 nm.

    CD13 is an aminopeptidase involved in proteolysis of proteins by gastric and pancreatic protease. CD13 is widely expressed as a protein involved in metabolism of regulatory peptides. CD13 is a marker for acute myeloid leukemia.

  • Tested applications

    Suitable for: Sandwich ELISAmore details
  • Platform

    Pre-coated microplate (12 x 8 well strips)


  • Storage instructions

    Store at +4°C. Please refer to protocols.
  • Components 1 x 96 tests
    10X Human CD13 Capture Antibody 1 x 600µl
    10X Human CD13 Detector Antibody 1 x 600µl
    10X Wash Buffer PT (ab206977) 1 x 20ml
    50X Cell Extraction Enhancer Solution (ab193971) 1 x 1ml
    Antibody Diluent 4BI 1 x 6ml
    Human CD13 Lyophilized Recombinant Protein 2 vials
    Plate Seals 1 unit
    Sample Diluent NS (ab193972) 1 x 50ml
    SimpleStep Pre-Coated 96-Well Microplate (ab206978) 1 unit
    Stop Solution 1 x 12ml
    TMB Development Solution 1 x 12ml
  • Research areas

  • Function

    Broad specificity aminopeptidase. Plays a role in the final digestion of peptides generated from hydrolysis of proteins by gastric and pancreatic proteases. May play a critical role in the pathogenesis of cholesterol gallstone disease. May be involved in the metabolism of regulatory peptides of diverse cell types including small intestinal and tubular epithelial cells, macrophages, granulocytes and synaptic membranes from the CNS. Found to cleave antigen peptides bound to major histocompatibility complex class II molecules of presenting cells and to degrade neurotransmitters at synaptic junctions. Is also implicated as a regulator of IL-8 bioavailability in the endometrium, and therefore may contribute to the regulation of angiogenesis. Is used as a marker for acute myeloid leukemia and plays a role in tumor invasion. In case of human coronavirus 229E (HCoV-229E) infection, serves as receptor for HCoV-229E spike glycoprotein. Mediates as well human cytomegalovirus (HCMV) infection.
  • Tissue specificity

    Expressed in epithelial cells of the kidney, intestine, and respiratory tract; granulocytes, monocytes, fibroblasts, endothelial cells, cerebral pericytes at the blood-brain barrier, synaptic membranes of cells in the CNS. Also expressed in endometrial stromal cells, but not in the endometrial glandular cells. Found in the vasculature of tissues that undergo angiogenesis and in malignant gliomas and lymph node metastases from multiple tumor types but not in blood vessels of normal tissues. A soluble form has been found in plasma. It is found to be elevated in plasma and effusions of cancer patients.
  • Sequence similarities

    Belongs to the peptidase M1 family.
  • Domain

    Amino acids 260-353 are essential to mediate susceptibility to infection with HCoV-229E (in porcine/human chimeric studies) and more specifically amino acids 288-295 (mutagenesis studies).
  • Post-translational

    N- and O-glycosylated.
    May undergo proteolysis and give rise to a soluble form.
  • Cellular localization

    Cell membrane. Cytoplasm > cytosol. A soluble form has also been detected.
  • Information by UniProt
  • Alternative names

    • Alanyl (membrane) aminopeptidase
    • Alanyl aminopeptidase
    • Aminopeptidase M
    • Aminopeptidase N
    • ANPEP
    • AP M
    • AP N
    • AP-M
    • AP-N
    • APN
    • CD 13
    • CD13
    • CD13 antigen
    • gp150
    • hAPN
    • LAP 1
    • LAP1
    • Microsomal aminopeptidase
    • Myeloid plasma membrane glycoprotein CD13
    • p150
    • PEPN
    see all
  • Database links

Associated products


Our Abpromise guarantee covers the use of ab239427 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Sandwich ELISA Use at an assay dependent concentration.


  • SimpleStep ELISA technology allows the formation of the antibody-antigen complex in one single step, reducing assay time to 90 minutes. Add samples or standards and antibody mix to wells all at once, incubate, wash, and add your final substrate. See protocol for a detailed step-by-step guide.


  • The CD13 standard curve was prepared as described in Section 10. Raw data values are shown in the table. Background-subtracted data values (mean +/- SD) are graphed.
  • The concentrations of CD13 were measured in duplicates, interpolated from the CD13 standard curves and corrected for sample dilution. Undiluted samples are as follows: serum 1: 160, plasma (citrate) 1: 80, plasma (heparin) 1: 80, and plasma (EDTA) 1: 80. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean CD13 concentration was determined to be 724.9 ng/mL in serum, 658.0 ng/mL in plasma (citrate), 651.2 ng/ml in plasma (heparin), and 618.4 ng/mL in plasma (EDTA).
  • The concentrations of CD13 were measured in duplicates, interpolated from the CD13 standard curves and corrected for sample dilution. Undiluted samples are as follows: HUVEC supernatant 1: 40. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean, dilution factor corrected CD13 concentration was determined to be 366.5 ng/ml in HUVEC supernatant.
  • Interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean CD13 concentration was determined to be 1245.6 ng/mL with a range of 1006.8 - 1765.3 ng/mL.



ab239427 has not yet been referenced specifically in any publications.

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