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

IgG, Subclass 4

Primary unit
mg/dL
LOINC codes
2469-5
Tests that measure IgG, Subclass 4
Labcorp 3, Quest Diagnostics 1

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, Immunoglobulin G Subclass 4 5428

PopulationInterval
0-1 Year0.5-78 mg/dL
2-3 Years1-54 mg/dL
4-5 Years2-112 mg/dL
6-7 Years0.4-98 mg/dL
8-9 Years2-95 mg/dL
10-11 Years2-115 mg/dL
12-13 Years4-136 mg/dL
14-17 Years11-157 mg/dL
Adults4-86 mg/dL

Quest Diagnostics test catalog, 5428

Tests

Check the catalog code, specimen, method and preparation for every test that measures IgG, Subclass 4. Select up to five tests to compare them side by side.

Labcorp 3 tests

Single-analyte tests

  • Immunoglobulin G, Subclass 4 160531

    Serum · Fasting not stated · Turnaround 3 - 5 days

    Method and collection
    Method
    Immunologic
    Collection
    Transfer specimen to a plastic transport tube.
    Reference notes
    See table. Immunoglobulin G, Subclass 4 Age Range (mg/dL) Cord 1−47 0 to 2 m 1−33 3 to 5 m 1−14 6 to 8 m 1−30 9 to 35 m 1−65 3 to 4 y 1−71 5 to 6 y 2−96 7 to 8 y 3−98 9 to10 y 4−110 11 to 12 y 4−114 13 to 14 y 4−107 15 to 17 y 3-119 18 to 19 y 3−104 >19 y 2−96
    Labcorp catalog page

Panels that include this biomarker

  • Immunoglobulin G, Monitoring of Primary Immunodeficiency Treatment Profile 123225

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

    Method and collection
    Method
    Immunologic
    Collection
    Transfer serum to a plastic transport tube.
    Reference notes
    Total IgG trough level: >800 mg/dL Note: Maintaining trough levels of total IgG above 800 mg/dL is reported to prevent serious bacterial illness, enteroviral meningoencephalitis, and pneumonia, but target trough levels may vary with individual patient.1-3 Approximate targets for trough levels for IgG subclasses (mg/dL)4: IgG1 IgG2 IgG3 IgG4 >480 >256 >32 >32
    Labcorp catalog page
  • Immunoglobulin G, Subclasses (1-4) 209601

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

    Method and collection
    Method
    Immunologic
    Collection
    Transfer serum to a plastic transport tube.
    Labcorp catalog page

Quest Diagnostics 1 test

Single-analyte tests

  • Immunoglobulin G Subclass 4 5428

    Serum · Fasting not stated · Turnaround Set up: Sun-Wed (p.m.)

    Method and collection
    Method
    Immunoturbidimetric Assay
    Quest Diagnostics catalog page

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Sources

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.

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