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Immunoglobulin G, Subclass 2

CPT 82787
Synonyms
  • IgG Subclass 2
  • IgG2

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 antipolysaccharide antibodies, sinopulmonary infections, immunodeficiency syndrome, and patients who demonstrate a poor response to carbohydrate antigens (group A strep, pneumococcus)

Special Instructions

State patient's age on the request form.

Limitations

This procedure is not suitable for the measurement of samples containing rheumatoid factor, paraproteins, 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

13 days

Refrigerated

13 days

Frozen

13 days

Freeze/thaw cycles

Stable x3

Reference Range

See table.

Immunoglobulin G, Subclass 2

Age

Range (mg/dL)

Cord

143−453

0 to 2 m

40−167

3 to 5 m

23−147

6 to 8 m

37−60

9 to 35 m

30−327

3 to 4 y

54−271

5 to 6 y

68−327

7 to 8 y

84−355

9 to 10 y

94−389

11 to 12 y

90−450

13 to 14 y

115−445

15 to 17 y

122−505

18 to 19 y

133−509

>19 y

130−555

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
160515 IgG, Subclass 2 2467-9 160515 IgG, Subclass 2 mg/dL 2467-9
Order Code160515
Order Code NameIgG, Subclass 2
Order Loinc2467-9
Result Code160515
Result Code NameIgG, Subclass 2
UofMmg/dL
Result LOINC2467-9