Insulin Like Growth Factor II
Test Mnemonic
IGFII
CPT Codes
- 83520 - QTY (1)
- 83519 - QTY (1)
Aliases
- IGF-II
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Serum | No additive (Red) | Frozen, Critical | CRITICAL FROZEN. Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection, transfer into standard aliquot tube, and freeze immediately. Separate specimens must be submitted when multiple tests are ordered. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Serum | SST (Gold) | Frozen, Critical | CRITICAL FROZEN. Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection, transfer into standard aliquot tube, and freeze immediately. Separate specimens must be submitted when multiple tests are ordered. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.2 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: 24 hours |
| Frozen | After separation from cells: 2 months |
| Refrigerated | After separation from cells: 2 days |
Days Performed
Tue
Turnaround Time
2 - 9 days
Methodology
| Name | Description |
|---|---|
| Enzyme-Linked Immunosorbent Assay (ELISA) |
Reference Range
| Insulin Like Growth Factor II | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Prepubertal (0-11 years old): 127 - 473 ng/mL | Postpubertal (12 years and older): 180 - 580 ng/mL |
Special Info
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Hemolyzed, lipemic, or icteric specimens will be rejected. This test is New York DOH approved.
Clinical Info
May be used as an adjunct to IGF-1 in the diagnosis of growth disorders.