Immunoglobulin A, Subclass 2

CPT: 83883
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Test Details

Synonyms

  • IgA Subclass 2
  • IgA2

Use

Study IgA deficiencies in patients in association with recurrent sinopulmonary infections or repeated transfusions; study IgA elevations associated with IgA myeloma

Methodology

Immunologic

Reference Interval

See table.

Immunoglobulin A, Subclass 2

Age

Range (mg/dL)

0 to 11 m

0.9−8.6

1 to 2 y

1.8−15.8

3 to 6 y

4.7−26.2

7 to 12 y

5.8−32.4

13 to 17 y

9.5−41.9

≥18 y

13.4−97.9

Specimen Requirements

Specimen

Serum

Volume

1 mL

Minimum Volume

0.5 mL

Container

Red-top tube or gel-barrier tube

Collection

Transfer specimen to a plastic transport tube.

Storage Instructions

Maintain specimen at room temperature.

Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x3

Causes for Rejection

Gross lipemia; hemolysis

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
123051 IgA, Subclass 2 6939-3 123051 IgA, Subclass 2 mg/dL 6939-3

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The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf