Biomarker Lens

Common biomarkers

  • Hemoglobin
  • Glucose
  • ALT
  • Apolipoprotein B
  • C-Reactive Protein, Cardiac
  • Ferritin
  • Alb/Creat Ratio, Urine
  • Alkaline Phosphatase
  • FSH
  • T4,Free(Direct)

Biomarkers · Chemical

IgA

An immunoglobulins blood test measures the amount of immunoglobulins in your blood. Immunoglobulins are also called antibodies.

Immunoglobulins Blood Test, MedlinePlus, National Library of Medicine

Also listed as
Immunoglobulin A, Qn, Serum
Primary unit
mg/dL
LOINC codes
2458-8
Tests that measure IgA
Labcorp 15, Quest Diagnostics 8

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Quest Diagnostics, IgA 539

PopulationInterval
Cord BloodNot Established
≤3 months5-40 mg/dL
4-6 months7-47 mg/dL
7-11 months12-53 mg/dL
1 year20-73 mg/dL
2 years20-99 mg/dL
3-5 years22-140 mg/dL
6-8 years31-180 mg/dL
9-11 years33-200 mg/dL
12-16 years36-220 mg/dL
17-60 years47-310 mg/dL
≥61 years70-320 mg/dL

Quest Diagnostics test catalog, 539

Tests

Check the catalog code, specimen, method and preparation for every test that measures IgA. Select up to five tests to compare them side by side.

Labcorp 15 tests

Single-analyte tests

  • IgA, Immunoglobulin A (RDL) 520072

    Specimen not stated · Fasting not stated · Turnaround 14 - 21 days

    Method and collection
    Method
    Turbidimetry
    Collection
    Separate serum from cells within one hour of collection. Transfer to a plastic transport tube before shipping. To avoid delays in turnaround time when requesting multiple tests on frozen samples , please submit separate frozen specimens for each test requested.
    Labcorp catalog page

  • Immunoglobulin A, Quantitative 001784

    Serum · Fasting not stated · Turnaround Within 1 day

    Method and collection
    Method
    Immunoturbidimetric
    Reference notes
    See table. Immunoglobulin A, Quantitative Age | Range (mg/dL) Male 0 to 10 d | 2−362 11 d to 6 m | 8−37 7 to 11 m | 12−58 1 to 3 y | 21−111 4 to 15 y | 52−221 16 to 60 y | 90−386 >60 y | 61−437 Female 0 to 10 d | 2−362 11 d to 6 m | 8−32 7 to 11 m | 11−45 1 to 3 y | 19−102 4 to 15 y | 51−220 16 to 70 y | 87−352 >70 y | 64−422
    Labcorp catalog page

Panels that include this biomarker

  • Celiac Antibodies tTG IgA and Total IgA With Reflex to tTG IgG and DGP IgG 164047

    2 analytes · Serum · Fasting not stated · Turnaround 2 - 3 days

    Method and collection
    Method
    IgA: Enzyme immunoassay (EIA) Tissue Transglutaminase tTG, IgA/IgG: Fluoroenzyme Immunoassay EliA Deamidated Gliadin Abs, IgG: Fluoroenzyme Immunoassay EliA
    Labcorp catalog page

  • Celiac Antibodies tTG IgA, DGP IgA, Total IgA With Reflex to tTG IgG and DGP IgG 164002

    3 analytes · Serum · Fasting not stated · Turnaround 2 - 4 days

    Method and collection
    Method
    IgA: Enzyme immunoassay (EIA) Tissue Transglutaminase tTG, IgA/IgG: Fluoroenzyme Immunoassay EliA Deamidated Gliadin Abs, IgA/IgG: Fluoroenzyme Immunoassay EliA
    Labcorp catalog page

  • Celiac Antibodies tTG IgA, EMA IgA, Total IgA With Reflex to tTG IgG 165142

    3 analytes · Serum · Fasting not stated · Turnaround 3 - 6 days

    Method and collection
    Method
    IgA: Enzyme immunoassay (EIA) Endomysial Antibody IgA : indirect immunofluorescence Tissue Transglutaminase tTG, IgA : Fluoroenzyme Immunoassay EliA
    Labcorp catalog page

  • Immunofixation (IFE), Serum 001685

    3 analytes · Serum · Fasting not stated · Turnaround 3 - 5 days

    Method and collection
    Method
    Electrophoresis followed by immunodiffusion against monospecific antisera to immunoglobulin and individual heavy and light chains (IFE); turbidimetric quantitation of IgA, IgG, and IgM
    Preparation
    Overnight fasting is preferred, but not required.
    Collection
    Separate serum from red cells.
    Reference notes
    Normal pattern
    Labcorp catalog page

  • Immunofixation, Daratumumab-Specific, Serum 123218

    3 analytes · Serum · Fasting not stated · Turnaround 6 - 8 days

    Method and collection
    Method
    Electrophoresis followed by immunodiffusion against mono-specific antisera to immunoglobulin and individual heavy and light chains (IFE); turbidimetric quantitation of IgA, IgG, IgM. The HYDRASHIFT 2/4 daratumumab gel shift assay uses an anti-daratumumab antibody to allow for the migration of Daratumumab/anti-daratumumab complexes away from the γ globulin zone on IFE, toward the α1-globulin fraction, thus removing IgG κ interference in the γ globulin zone caused by Daratumumab in the patient's serum.
    Preparation
    Overnight fasting is preferred, but not required.
    Collection
    Separate serum from red cells.
    Reference notes
    Normal pattern
    Labcorp catalog page

Quest Diagnostics 8 tests

Single-analyte tests

  • IgA 539

    Serum · Fasting not stated · Turnaround Set up: Tues-Sat; Report available: 6 days

    Method and collection
    Method
    Immunoturbidimetric
    Quest Diagnostics catalog page

Panels that include this biomarker

  • Celiac Disease Comprehensive Panel 19955

    2 analytes · Serum · Fasting not stated

    Method and collection
    Method
    Immunoassay (IA) • Immunoturbidimetric
    Reference notes
    Tissue Transglutaminase (tTG) Antibody (IgA) <15.0 U/mL | Antibody not detected ≥15.0 U/mL | Antibody detected IgA (Immunoglobulin A) Cord Blood | Not Established ≤3 months | 5-40 mg/dL 4-6 months | 7-47 mg/dL 7-11 months | 12-53 mg/dL 1 year | 20-73 mg/dL 2 years | 20-99 mg/dL 3-5 years | 22-140 mg/dL 6-8 years | 31-180 mg/dL 9-11 years | 33-200 mg/dL 12-16 years | 36-220 mg/dL 17-60 years | 47-310 mg/dL ≥61 years | 70-320 mg/dL
    Quest Diagnostics catalog page

  • Celiac Disease Comprehensive Panel with Gliadin Antibody (IgG) 36336

    2 analytes · Serum · Fasting not stated

    Method and collection
    Method
    Immunoassay (IA) • Immunoturbidimetric Assay
    Reference notes
    Tissue Transglutaminase (tTG) Antibody (IgA) <15.0 U/mL | Antibody not detected ≥15.0 U/mL | Antibody detected IgA (Immunoglobulin A) Cord Blood | Not Established ≤3 months | 5-40 mg/dL 4-6 months | 7-47 mg/dL 7-11 months | 12-53 mg/dL 1 year | 20-73 mg/dL 2 years | 20-99 mg/dL 3-5 years | 22-140 mg/dL 6-8 years | 31-180 mg/dL 9-11 years | 33-200 mg/dL 12-16 years | 36-220 mg/dL 17-60 years | 47-310 mg/dL ≥61 years | 70-320 mg/dL
    Quest Diagnostics catalog page

  • Celiac Disease Panel without Gliadin 17612

    2 analytes · Serum · Fasting not stated

    Method and collection
    Method
    Immunoassay (IA) • Immunoturbidimetric
    Reference notes
    Tissue Transglutaminase (tTG) Antibody (IgA) <15.0 U/mL | Antibody not detected ≥15.0 U/mL | Antibody detected IgA (Immunoglobulin A) Cord Blood | Not Established ≤3 months | 5-40 mg/dL 4-6 months | 7-47 mg/dL 7-11 months | 12-53 mg/dL 1 year | 20-73 mg/dL 2 years | 20-99 mg/dL 3-5 years | 22-140 mg/dL 6-8 years | 31-180 mg/dL 9-11 years | 33-200 mg/dL 12-16 years | 36-220 mg/dL 17-60 years | 47-310 mg/dL ≥61 years | 70-320 mg/dL
    Quest Diagnostics catalog page

  • Autoimmune Cerebellar Ataxia Panel 90133

    3 analytes · Serum · Fasting not stated

    Method and collection
    Method
    Immunoassay (IA) • Immunofluorescence Assay (IFA) • Immunoturbidometry • Radiobinding Assay (RBA)
    Preparation
    Overnight fasting is preferred
    Reference notes
    See Laboratory Report
    Quest Diagnostics catalog page

  • IgA Subclasses 34188

    3 analytes · Serum · Fasting not stated · Turnaround Set up: Mon, Wed (p.m.)

    Method and collection
    Method
    Immunoturbidimetry
    Preparation
    Fasting preferred
    Reference notes
    IgA1 6-11 months | 1-115 mg/dL 1 year | 3-120 mg/dL 2 years | 7-132 mg/dL 3 years | 11-143 mg/dL 4-7 years | 23-175 mg/dL 8-11 years | 33-204 mg/dL 12-17 years | 47-249 mg/dL ≥18 years | 46-378 mg/dL IgA2 6-11 months | 0-19 mg/dL 1 year | 0-23 mg/dL 2 years | 1-23 mg/dL 3 years | 1-25 mg/dL 4-7 years | 2-33 mg/dL 8-11 years | 2-37 mg/dL 12-17 years | 4-50 mg/dL ≥18 years | 13-91 mg/dL IgA, Serum Cord Blood | 1-3 mg/dL 1-28 days | 2-40 mg/dL 1-3 months | 3-40 mg/dL 4-6 months | 7-47 mg/dL 7-11 months | 12-53 mg/dL 1 year | 20-73 mg/dL 2 years | 20-99 mg/dL 3-5 years | 22-140 mg/dL 6-8 years | 31-180 mg/dL 9-11 years | 33-200 mg/dL 12-16 years | 36-220 mg/dL 17-60 years | 47-310 mg/dL ≥61 years | 70-320 mg/dL
    Quest Diagnostics catalog page

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Goals and conditions

We link IgA to these goals and conditions from named guidelines and studies.

Sources

Check the guidelines, studies and lab catalogs behind every range and link on this page. Open a source to see each claim it backs.

Clinical guidelines

Lab catalogs

Reference sources

Codes and registries

  • LOINC 2458-8

    Regenstrief Institute codes that identify the same result across labs.

  • Search ClinicalTrials.gov for IgA

    Registered studies that measure IgA, on the U.S. National Library of Medicine registry.

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

Spotted an error? Email hello@biomarkerlens.com with the page URL and the primary source that corrects the entry.