Diabetes Testing
Diabetes Testing can be requested without a referral, and this overview covers what to expect. Diabetes testing uses blood samples to measure glucose and related markers. It helps screen for diabetes, diagnose it, or monitor blood sugar control over time.
- Sample type
- blood
- Category
- Metabolic & Glucose
- Turnaround
- 1-3 business days
- Price
- $28
- Referral
- Not required
Diabetes testing uses blood samples to measure glucose and related markers. It helps screen for diabetes, diagnose it, or monitor blood sugar control over time.
What it measures
- Fasting glucose — Blood sugar after not eating for at least 8 hours.
- Hemoglobin A1c — Average blood sugar over the past 2–3 months.
- Random glucose — Blood sugar at any time, no fasting needed.
- Oral glucose tolerance — Blood sugar before and 2 hours after a sugary drink.
Who it is for
Clinicians order diabetes testing for adults with risk factors, symptoms like excessive thirst or urination, or to monitor known diabetes.
Preparation
Fasting glucose and oral glucose tolerance tests require 8–12 hours of fasting. A1c and random glucose need no fasting.
Results and what they mean
Results are reported as numbers with reference ranges. Your clinician interprets them alongside your history and symptoms. This is general information, not medical advice.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the diabetes testing is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to fast for all diabetes tests?
No. Only fasting glucose and oral glucose tolerance tests require fasting. A1c and random glucose do not.
How long until I get results?
Typically 1–3 business days, though some clinics provide results sooner.
Can I eat or drink before the test?
Water is fine. If fasting is required, avoid all food and drinks except water for 8–12 hours.
What if my result is outside the normal range?
A single result does not diagnose diabetes. Your clinician may repeat the test or order others to confirm.