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 mLSerumNo additive (Red) Frozen, CriticalCRITICAL 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 mLSerumSST (Gold) Frozen, CriticalCRITICAL 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
AmbientAfter separation from cells: 24 hours
FrozenAfter separation from cells: 2 months
RefrigeratedAfter 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.