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Immunoglobulin G, Subclass 1

CPT 82787
Synonyms
  • IgG Subclass 1
  • IgG1

Test Details

Methodology

Immunologic

Result Turnaround Time

3 - 5 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Documents

Use

Evaluate T-cell dependent response in patients with poor response to viral or bacterial antigens, immunodeficiency syndromes. See Immunoglobulin G, Subclasses (1-4) [209601].

Special Instructions

State the patient's age on the test request form.

Limitations

This procedure is not suitable for the measurement of samples containing rheumatoid factor, paraproteins, or other circulating immune complexes (CICs) or for lipemic or hemolyzed samples due to the unpredictable degree of nonspecific light scatter these sample types may generate. The results obtained from measuring IgG subclasses should not be used in assessing atopy in allergic patients.

Specimen Requirements

Specimen

Serum

Volume

1 mL

Minimum Volume

0.4 mL

Container

Red-top tube or gel-barrier tube

Collection Instructions

Transfer specimen to a plastic transport tube.

Stability Requirements

Temperature

Period

Room temperature

7 days

Refrigerated

7 days

Frozen

14 days

Freeze/thaw cycles

Stable x3

Reference Range

See table.

Immunoglobulin G, Subclass 1

Age

Range (mg/dL)

Cord

435−1084

0 to 2 m

218−496

3 to 5 m

143−394

6 to 8 m

190−388

9 to 35 m

286−680

3 to 4 y

281−755

5 to 6 y

306−794

7 to 8 y

321−802

9 to 10 y

309−813

11 to 12 y

311−821

13 to 14 y

304−830

15 to 17 y

310−851

18 to 19 y

325−846

>19 y

248−810

Storage Instructions

Room temperature

Causes for Rejection

Gross lipemia; hemolysis

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
160507 IgG, Subclass 1 2466-1 160507 IgG, Subclass 1 mg/dL 2466-1
Order Code160507
Order Code NameIgG, Subclass 1
Order Loinc2466-1
Result Code160507
Result Code NameIgG, Subclass 1
UofMmg/dL
Result LOINC2466-1