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.
Use
Evaluate immunodeficiency syndromes; evaluate recurrent sinusitis and otitis media
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 | 14 days |
Refrigerated | 14 days |
Frozen | 14 days |
Freeze/thaw cycles | Stable x3 |
Reference Range
See table.
Age | Range (mg/dL) |
|---|---|
Cord | 27−146 |
0 to 2 m | 4−23 |
3 to 5 m | 4−100 |
6 to 8 m | 12−62 |
9 to 35 m | 13−82 |
3 to 4 y | 16−84 |
5 to 6 y | 16−94 |
7 to 8 y | 18−102 |
9 to 10 y | 20−100 |
11 to 12 y | 17−109 |
13 to 14 y | 20−105 |
15 to 17 y | 19−107 |
18 to 19 y | 19−109 |
>19 y | 15−102 |
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 |
|---|---|---|---|---|---|---|
| 160523 | IgG, Subclass 3 | 2468-7 | 160523 | IgG, Subclass 3 | mg/dL | 2468-7 |
| Order Code | 160523 | |||||
| Order Code Name | IgG, Subclass 3 | |||||
| Order Loinc | 2468-7 | |||||
| Result Code | 160523 | |||||
| Result Code Name | IgG, Subclass 3 | |||||
| UofM | mg/dL | |||||
| Result LOINC | 2468-7 |