Immunoglobulin A, subclasses (1-2)

Alphabetical Test listing

Immunoglobulin A, subclasses (1-2)-994

Test name:

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

IgA Subclasses
IgA (1,2)

Tests included:

Quantitation of IgA1
Quantitation of IgA2
Total IgA

Useful for:

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

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

2.0 mL

Minimum volume:

1.0 mL

Collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection
Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum

Transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

Alternate collection container:

Red serum vial/tube, 5 mL

Alternate processing instructions:

Allow sample to clot
Spin
Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum, within two (2) hours of sample collection

Transport and stability:

Ambient (preferred) - 14 days

Refrigerated - 14 days

Frozen - 14 days

Freeze/thaw cycles - stable x3

Reason for rejection:

Gross lipemia
Hemolysis

Performing lab:

LabCorp Burlington (123049): R-NX

Days set up:

Mo, We, Fr

TAT:

7 days

Method:

Immunologic

Reference ranges:

Immunoglobulin A, Qn, Serum       61 - 437 mg/dL
IgA, Subclass 1                       73.2 - 301.2 mg/dL
IgA, Subclass 2                         13.4 - 97.9 mg/dL

CPT codes:

83883 x 2
82784

LOINC code:

Result 2458-8

Date created:

05/29/2019

Revised date:

04/11/2022

Review date:

03/31/2022