Order IGF-1 (Insulin-like Growth Factor 1) Blood Test from JustLabs for $24 ($42 all-in for a single-test order: $24 + one $18 lab & physician order fee per order). Price includes lab processing at Quest Diagnostics. No insurance required.
IGF-1 is the primary mediator of growth hormone effects in the body, reflecting overall growth hormone status and important for metabolism, muscle, and bone health.
Insulin-like Growth Factor 1 (IGF-1) is a hormone primarily produced by the liver in response to growth hormone (GH). Unlike growth hormone which fluctuates throughout the day, IGF-1 levels remain stable, making it the best marker for assessing overall growth hormone status.
IGF-1 plays crucial roles in growth during childhood, muscle and bone maintenance in adults, and metabolic health. It promotes protein synthesis, supports muscle growth, and helps regulate body composition.
IGF-1 levels naturally decline with age. Low levels are associated with decreased muscle mass, increased body fat, reduced bone density, and lower energy. However, both very low and very high IGF-1 levels can indicate health concerns.
Price
$24
All-in
$42
incl. $18 lab & physician fee
Results
2-3 business days
Fasting
Not Required
What's Measured
What This Test Measures
This test measures the blood concentration of IGF-1, reported in ng/mL. Normal ranges vary by age and sex. IGF-1 reflects integrated growth hormone secretion over time, providing a stable indicator of GH status.
Who Should Consider This Test
Adults interested in growth hormone status, those with symptoms of GH deficiency, people concerned about age-related hormone decline, athletes and fitness enthusiasts, individuals with unexplained fatigue or muscle loss, and those evaluating pituitary function.
Health Insights
Conditions Screened
Related Symptoms
When to Get Tested
No fasting required. IGF-1 levels are stable throughout the day, so timing doesn't matter. Avoid testing during acute illness as levels may be temporarily affected.
No fasting needed. How to prepare for your blood test →
Understanding Your Results
Normal IGF-1 varies significantly by age. Typical adult ranges: Ages 20-30: 115-350 ng/mL, Ages 30-40: 115-310 ng/mL, Ages 40-50: 95-250 ng/mL, Ages 50+: 70-210 ng/mL. Results should be interpreted with age-specific references.
What to Expect
After placing your order, we send it straight to Quest Diagnostics — there is no consent form to sign and no partner email to wait for. Your requisition is usually ready to download from your dashboard within about an hour, and you can book your blood draw at any Quest Diagnostics location.
The blood draw typically takes just a few minutes. Results are usually available within 2-3 business days and will appear in your secure JustLabs dashboard.
Our results include reference ranges and easy-to-understand indicators showing whether your values are within normal limits.
How much does the IGF-1 test cost?
The IGF-1 test costs $24 at JustLabs — $42 all-in, since the $18 lab & physician order fee is charged once per order, however many tests you add. The price is fixed before your blood draw; no insurance or doctor visit needed.
| Option | Price | Order all-in | Notes |
|---|---|---|---|
| IGF-1 at JustLabsDrawn at Quest Diagnostics | $24 | $42 | Includes the one $18 fee, charged once per order |
Paying with an HSA or FSA? See which lab tests qualify
Frequently Asked Questions
Hospital cash price: $120–$180
$24
+ $18 order fee · $42 all-inOne $18 fee per order covers your Quest blood draw and the independent physician order, however many tests you add.
- Results in 2-3 business days
- No fasting required
- Physician order included
No insurance needed · HSA/FSA eligible
- Physician-ordered
- CLIA-certified Quest lab
- Drawn at Quest Diagnostics
Need Help Choosing?
Not sure if this is the right test for you? Take our quick questionnaire.
Take the QuizRelated Tests
Testosterone
Testosterone, Free & Total
$34
Comprehensive testosterone panel measuring both free and total testosterone levels.
Biomarkers:
Total Testosterone, Free Testosterone
DHEA-S
DHEA-Sulfate
$14
Measures DHEA-S, a precursor hormone from the adrenal glands. Declines with age.
Biomarkers:
DHEA-Sulfate
Fasting Insulin
Insulin, Fasting
$14
Measures fasting insulin levels to assess insulin resistance and metabolic health. Important for early detection of diabetes risk.
Biomarkers:
Insulin
Vitamin D
Vitamin D, 25-Hydroxy
$25
Measures vitamin D status. Deficiency is common and linked to bone health, immune function, and mood.
Biomarkers:
Vitamin D, 25-OH
$24
+ $18 order fee · $42 all-in