Insulin, Fasting

Quest#561
LabCorp#004333
18 ordering services comparedPrices last checked 3 days ago

The fasting insulin test measures the amount of insulin in your blood after a period without eating. Insulin is a hormone made by the pancreas that helps move glucose (sugar) from the bloodstream into cells for energy. This test is often used alongside a fasting glucose measurement to evaluate how your body manages blood sugar. This test helps assess how much insulin the body is producing and can provide information about insulin resistance or unusually high or low insulin levels. It is sometimes ordered along with glucose testing to help evaluate conditions related to blood sugar regulation. Results are interpreted by a healthcare provider in the context of other tests and your overall health.

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How much does an Insulin, Fasting test cost?

The cheapest self-pay Insulin, Fasting test is $3.42 at Mito Health, out of 18 ordering services compared. The highest listed price is $89.00 at LabCorp OnDemand, a difference of $85.58. It is Quest test code 561 and LabCorp test code 004333. Prices are self-pay cash rates read from each service’s own public catalog, last verified 3 days ago.

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Mito Health · $3.42
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Insulin, Fasting self-pay prices by ordering service, last checked 3 days ago
Ordering ServicePriceOrder
Mito Health✓ Best Pricechecked 3 days ago$3.42$2.44 for members ($9/mo membership)Order
Good Labschecked 3 days ago$4.00Order
Anabolic Insightschecked 3 days ago$7.00$15.00 via LabCorp also availableOrder
DrSayschecked 3 days ago$9.99Order
Marek Diagnosticschecked 3 days ago$10.00Order
AlgoRxchecked 3 days ago$12.50Order
Own Your Labschecked 3 days ago$14.40Order
Jason Healthchecked 3 days ago$20.00Order
HealthLabs.comchecked 3 days ago$29.00Order
Walk-In Labchecked 3 days ago$34.00Order
DirectLabschecked 3 days ago$34.00Order
Private MD Labschecked 3 days ago$39.00Order
Discounted Labschecked 3 days ago$42.00Order
Request A Testchecked 3 days ago$49.00Order
True Health Labschecked 21 days ago$69.00Order
Personalabschecked 3 days ago$74.90Order
Quest Healthchecked 3 days ago$79.20Order
LabCorp OnDemandchecked 3 days ago$89.00Order

These are online lab ordering services — not the physical draw site. Once you purchase a requisition, you visit a nearby Quest or LabCorp patient service center for your blood draw. Prices are self-pay cash rates and may vary by location.

Guides about Insulin, Fasting

Plain-English explanations of what this test measures and how it's done.

What blood tests do bodybuilders track?
The blood tests most often discussed in bodybuilding and strength communities fall into four groups: hormones (total and free testosterone, estradiol, SHBG, LH and FSH), general health panels (CBC and CMP), heart and metabolic markers (lipid panel, ApoB, A1c, fasting insulin), and thyroid, iron and vitamin markers. Hard training changes some of these numbers by itself, which matters when comparing results over time.
Do you need to fast before a blood test?
Most blood tests do not require fasting. The ones that usually do are glucose and insulin tests, and any panel containing them, such as a comprehensive metabolic panel. When fasting is required it normally means 8 to 12 hours with nothing but plain water. Always follow the instruction printed on your own requisition, because it is specific to the test that was ordered.

Insulin, Fasting: common questions

How much does an Insulin, Fasting test cost without insurance?

The lowest self-pay price we track for Insulin, Fasting is $3.42 at Mito Health, across 18 ordering services; the highest is $89.00. You pay the ordering service directly, and no insurance is involved. Prices were last verified on September 28, 2026.

Do you need a doctor's order for an Insulin, Fasting test?

No. Every ordering service listed on this page includes the physician order with the purchase, so you can buy Insulin, Fasting yourself and take the requisition to the lab. Your results come back to you — what they mean is a conversation for you and a clinician.

Where is the blood drawn for an Insulin, Fasting test?

At a Quest Diagnostics or LabCorp patient service center, depending on which laboratory the ordering service you pick uses. You choose the location and time after you order. LabTestCompare does not draw blood, run tests, or issue results — we only compare what each service charges.

Can you use health insurance for an Insulin, Fasting test?

No. Every price on this page is a self-pay price paid directly to the ordering service, and none of these services bill insurance. If you want Insulin, Fasting billed through your plan instead, that goes through your own provider — which is a separate route with its own cost, and worth comparing against the prices here.

Is this the same Insulin, Fasting test a doctor would order?

Yes — it is the same assay, identified by the same laboratory order codes: Quest #561 and LabCorp #004333. Every price on this page is matched to that code, which is how we can say the services are being compared on an identical test rather than on similarly named products.

How long do Insulin, Fasting results take?

That is set by the laboratory rather than by us. Routine blood tests are commonly back within a few business days and specialized assays take longer; the ordering service states the expected turnaround for Insulin, Fasting before you buy, and delivers the result to you directly.

Compiled by the LabTestCompare editorial team. Prices are collected from each ordering service’s own published catalog and re-checked on a schedule — see our editorial policy for how we source and correct them. Prices on this page were last verified .

Background reading on lab testing: MedlinePlus: Lab Tests (NIH) · CDC. This page is a price comparison, not medical advice — see our medical disclaimer.