Insulin, Fasting
ZRT Laboratory
Sample type: Bloodspot
Requires fasting: Yes
At home test
Details
This test measures insulin. Insulin is a marker of insulin resistance and is commonly used with HbA1c.
- Insulin, Blood Spot
Estimated days for results: Results should arrive 8-10 business days after the lab receives samples.
High fasting insulin is an indicator of insulin resistance. Chronically high fasting insulin is seen as the body attempts to normalize blood sugar levels. High fasting insulin suggests the presence of insulin resistance even if the patient shows glucose tolerance and a normal HbA1c.
8–10 business days
Before You Start
3 Days Before Collection
12 Hours Before Collection
Day of Collection
- Read the provided test collection instructions carefully.
- Watch the test collection video.
- You can collect your sample at any time.
3 Days Before Collection
- DO NOT take biotin/vitamin B7.
12 Hours Before Collection
- You must fast for 10-12 hours Before Collection.
- Fasting means you don't eat or drink anything except water.
- Your doctor should provide any special instructions related to fasting for your test. Always follow your doctor's instructions.
Day of Collection
- Collect your sample within one hour of waking.
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
