Fasting Insulin Test Popular
Order online, visit a nearby lab, and get private results online. No doctor's visit or insurance needed.
- 4,500+ CLIA-certified labsNo appointment needed for most tests
- Physician-orderedNo doctor’s visit or referral needed
- Secure and confidentialNot billed to insurance
- Most results in 1–3 daysIn your secure online account
- HSA/FSA cards acceptedItemized receipt available
Price $29 Compare at $58
You save $29 · 50% off
110% price guarantee · No hidden fees
How to prepare Fasting required
Fasting is required for this lab test. You should not consume food or beverages other than water for at least 8 hours prior to visiting the lab. If you choose not to fast, it may affect your results.
About this test
The Fasting Insulin test measures the level of insulin in your blood after a period of fasting, offering critical insight into how efficiently your body uses insulin. Elevated fasting insulin levels can signal insulin resistance, often years before blood sugar levels rise, making this test a powerful early indicator of metabolic dysfunction.
Because insulin resistance commonly precedes type 2 diabetes and plays a central role in metabolic syndrome, this test helps uncover hidden risks early, when lifestyle and treatment interventions are most effective.
What Is Included In This Test?
This test measures fasting insulin levels to evaluate how much insulin your body must produce to maintain normal blood sugar.
Your results can help:
- Detect insulin resistance and early metabolic dysfunction
- Identify prediabetes risk before glucose levels become abnormal
- Monitor the effectiveness of diet, exercise, or medication
- Support evaluation of metabolic syndrome
- Assess excessive insulin production related to low blood sugar symptoms
When used alongside glucose testing, fasting insulin provides a deeper, more complete picture of metabolic health.
Who Should Consider This Test?
This test is ideal for individuals who want early insight into insulin sensitivity and long-term metabolic risk.
You should consider this test if you:
- Have risk factors for type 2 diabetes or metabolic syndrome
- Want to identify insulin resistance before blood sugar rises
- Are managing prediabetes or diabetes and want to track treatment effectiveness
- Have polycystic ovary syndrome (PCOS)
- Experience symptoms of hypoglycemia or unexplained energy crashes
Early detection allows for targeted lifestyle changes and better prevention of chronic disease.
Convenient, No-Appointment Testing
To complete your test:
- Order online through our website
- Use the lab locator to find a nearby testing location
- Walk in; no appointment required
- Access your results securely in your HealthLabs.com account within one to three business days
110% Price Guarantee!
If you find the same test for a lower price from a comparable provider, contact us. We not only match the price, we beat it by an additional 10 percent of the difference.
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From order to results
No doctor's visit, no appointment and no insurance paperwork.
- TodayOrder online No doctor’s referral or insurance needed. Our physicians provide the lab order.
- Same dayWalk in to a nearby lab 4,500+ CLIA-certified U.S. labs. No appointment needed.
- 1–3 daysGet your results Most results post to your secure account within 1–3 business days.
- NextTake them further Download them to share with your doctor, or text Patient Services with questions.
HealthLabs.com vs. going through your doctor
| Feature | HealthLabs.com | Through your doctor |
|---|---|---|
| Referral needed | No, our physicians provide the order | Usually requires a visit first |
| Appointment | Walk in for most tests | Book, then wait for a visit |
| Insurance | Not needed | Co-pays and deductibles may apply |
| Price known upfront | Yes, listed next to every test | Often not until you're billed |
| Choose your own tests | Yes, from our full test menu | Your doctor decides |
| Getting results | Online, most in 1–3 business days | Often shared at a follow-up |
Questions? We're here to help.
Call or text 1 (800) 579-3914.
Why is fasting insulin important?
Elevated fasting insulin can signal insulin resistance long before blood sugar levels become abnormal.
How is this test different from a glucose test?
A glucose test (opens in a new tab) measures blood sugar, while a fasting insulin test shows how hard your body must work to keep blood sugar stable.
Will anyone see my results besides me?
Your results are stored in your secure online account. They are not shared with anyone else. If you choose, you can print or download them to share with your own doctor.
Do I need to fast before this test?
Yes, fasting is required for this lab test. You should not consume food or beverages other than water for at least 8 hours prior to visiting the lab. If you choose not to fast, it may affect your results.
Can I talk to someone about my results?
Yes. If your results come back abnormal or if you simply have questions, our team is here to support you. You can text our Patient Services team at 1800-579-3914, anytime between 8am and 8pm.
Can I use insurance to pay for this test?
In order to ensure your privacy, we do not bill insurance directly, but you may use HSA or FSA funds. This keeps your results and testing completely private from insurers. We can also provide you with an itemized receipt for insurance reimbursement purposes if you need it.
What type of sample is required for this test?
This test requires a simple blood draw. No urine samples, swabs, or physical exams are involved.
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Medically reviewed by Erin Zinkhan, MD, BSBE (opens in a new tab) · Reviewed Jan 24, 2026 · Written by HealthLabs Editorial Team (opens in a new tab)
Fasting Insulin Test
No doctor's visit needed · HSA/FSA cards accepted · 110% price guarantee
Price $29 Compare at $58 You save $29 · 50% off