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Test ID BLOD0209 Insulin-Like Growth Factor I

Important Note

Effective 1/19/2026:  Due to intermittent instrument issues, we have experienced a backlog. Please add 2-3 days to the TAT.  Target Resolution: 1-27-2026

AKA

IGF-1

Specimen Type/Requirements

Gold top (Serum w/out gel) tube - Serum

Red top (Serum w/gel) tube - Serum

 

Test is affected by hemolysis.

Specimen Volume

 Preferred Volume     0.5 mL   
 Minimum Volume     0.3 mL

Stability/Transport

 Room Temperature     48 hours     
 Refrigerated     7 days  Preferred for transport   
 Frozen     60 days  

Performed Test Frequency

Monday through Sunday

Methodology

LC/MS

Report Available

2 - 5 days

Performing Lab

Quest Diagnostics

CPT

84305

Interface Build Information

 Result Code     Result Code Description   
 28588  IGF-1, LCMS
 28589  Z-Score (Male)
 28590  Z-Score (Female)