Ordering Recommendation

May be used as an adjunct to IGF-1 in diagnosis of growth disorders.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation

Plain Red or Serum Separator Tube (SST).

Specimen Preparation

Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum to an ARUP Standard Transport Tube (Min: 0.2 mL). Freeze Immediately.

Storage/Transport Temperature

CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Unacceptable Conditions

Moderately or grossly hemolyzed or severely lipemic specimens


Ambient: 24 hours; Refrigerated: 2 days; Frozen: 2 months (Avoid repeated freeze/thaw cycles)


Quantitative Enzyme-Linked Immunosorbent Assay (ELISA)




1-8 days

Reference Interval

Prepubertal (0-11 years old) 127-473 ng/mL
Postpubertal (12 years and older) 180-580 ng/mL

Interpretive Data

Refer to report.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)


Hotline History


CPT Codes



Component Test Code* Component Chart Name LOINC
2013600 Insulin-Like Growth Factor (IGF-2) 2485-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.


  • IGF-2 (Insulin-Like Growth Factor II)
Insulin-Like Growth Factor 2 (IGF-2)