Lab Test : Insulin-like growth factor (IGF-1)

Print this page Bookmark and Share
Alternate:IGF1; Somatomedin C
Phone:(937) 641-3908
Available:Mon - Fri, first shift only
Turnaround:48 hours
Volume:0.7 mL
Container:4 mL red top tube
Temperature:Samples should be transported to the laboratory within 20 minutes.
Rejection:Gross hemolysis or gross lipemia. No EDTA or Heparinized samples.
2 months:17-248 ng/mL
6 years: 88-474 ng/mL
9 years:110-565 ng/mL
12 years: 202-957 ng/mL
16 years: 182-780 ng/mL
2 months: 17-248 ng/mL
6 years: 88-474 ng/mL
9 years: 117-771 ng/mL
12 years: 261-1096 ng/mL
16 years:182-780 ng/mL.
Uses:In children with unequivocal growth hormone deficiency(GHD) and severe hypothyroidism, IGF-1 values are consistently low. Furthermore , the finding of normal IGF-1 values makes the diagnosis of growth hormone deficiency less likely. Low IGF-1 values are not in themselves diagnostic of GHD and should be followed up by additional studies of GH secretion. In cases of hypoprolactinemia or craniopharyngioma, IGF-1 values may be normal in patients with growth hormone deficiency. Low IGF-1 results can be found in apparently normal children below 5 years of age. Hypopituitary children can exhibit levels of IGF-1 into the low normal range for their age. For such individuals, further tests including growth hormone perturbation studies may be needed.
Method:Sandwich chemiluminescence immunoassay

Online referral form

Did you know you can make a referral to any of our specialty clinics online? Use the form below to submit directly to central scheduling. 

Complete the form 

Pediatric Link

Finding the latest trusted child health and safety information doesn't have to be hard. Pediatric Link, Dayton Children's e-newsletter offers timely and up-to-date information for health care professionals from the experts you trust at Dayton Children's.

Sign up

Upcoming Events

Vascular Anomalies Part 2: Diagnosis and Treatment of Vascular Malformations

Proportionality and Double-Effect: Treatment Withdrawal in Young Patients

View full event calendarView more events...

The Right Experts

Just right for all kids


The Children's Medical Center of Dayton Dayton Children's
The Right Care for the Right Reasons

One Children's Plaza - Dayton, Ohio - 45404-1815