Order Fasting Insulin Blood Test from JustLabs for $14 ($32 all-in for a single-test order: $14 + one $18 lab & physician order fee per order). Price includes lab processing at Quest Diagnostics. No insurance required.
Fasting insulin measures how much insulin your pancreas produces to control blood sugar - an early warning sign of metabolic problems.
Insulin is the hormone that moves glucose from your blood into your cells. When cells become resistant to insulin, your pancreas has to produce more to keep blood sugar normal. This "hyperinsulinemia" can exist for years before blood sugar rises and diabetes develops.
Testing fasting insulin catches metabolic dysfunction early, when lifestyle changes are most effective. It's a key marker in understanding your metabolic health beyond just blood sugar.
Price
$14
All-in
$32
incl. $18 lab & physician fee
Results
1-2 business days
Fasting
10+ hrs
What's Measured
What This Test Measures
This test measures the amount of insulin in your blood after fasting. Normal fasting insulin is typically 2-25 µIU/mL, with optimal levels below 10 µIU/mL. Higher levels suggest insulin resistance, even if blood sugar is still normal.
Who Should Consider This Test
Anyone with risk factors for diabetes (family history, overweight, PCOS, sedentary lifestyle), those with metabolic syndrome, people with high triglycerides or low HDL, and anyone wanting a deeper understanding of their metabolic health.
Health Insights
Conditions Screened
Related Symptoms
When to Get Tested
Test after fasting 10-12 hours. Best done in the morning. Can be combined with fasting glucose to calculate HOMA-IR (insulin resistance index).
Fasting Required
This test requires fasting for accurate results. Please follow these instructions:
- Do not eat or drink anything except water for 10-12 hours before your blood draw.
- Water is allowed and encouraged - stay hydrated!
- Schedule your lab visit in the morning for convenience.
- Continue taking any prescribed medications unless advised otherwise by your doctor.
Understanding Your Results
Optimal fasting insulin is below 10 µIU/mL. Levels of 10-25 may indicate early insulin resistance. Above 25 suggests significant insulin resistance. When combined with fasting glucose, your results can be used to calculate HOMA-IR for a more complete picture.
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 1-2 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 Fasting Insulin test cost?
The Fasting Insulin test costs $14 at JustLabs — $32 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 |
|---|---|---|---|
| Fasting Insulin at JustLabsDrawn at Quest Diagnostics | $14 | $32 | 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: $150–$250
$14
+ $18 order fee · $32 all-inOne $18 fee per order covers your Quest blood draw and the independent physician order, however many tests you add.
- Results in 1-2 business days
- Fasting required (10 hours)
- 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
Fasting Glucose
Glucose, Fasting
$6
Measures blood sugar levels after fasting. Used to screen for diabetes and monitor blood sugar control.
Biomarkers:
Glucose
HbA1c
Hemoglobin A1c (HbA1c)
$7
Measures average blood sugar over the past 2-3 months. Key marker for diabetes management and prediabetes screening.
Biomarkers:
HbA1c, Estimated Average Glucose
Lipid Panel
Lipid Panel (Standard)
$8
Standard cholesterol panel including total cholesterol, HDL, LDL, and triglycerides. Essential for cardiovascular risk assessment.
Biomarkers:
Triglycerides, Total Cholesterol, HDL Cholesterol +3 more
Explore More
Related Articles
$14
+ $18 order fee · $32 all-in