South · Diabetes Testing
Diabetes Testing in Tennessee
Diabetes Testing can be ordered without a referral from your own doctor, and this guide covers what to expect. Diabetes testing uses blood samples to measure glucose and related markers that reflect how well your body manages blood sugar. It can be ordered without a doctor's referral at many labs.
Lab requirements in Tennessee
Here is what you need before ordering and completing the Diabetes Testing in TN. Review each item and confirm the details with the collection lab.
- Physician's order
- Included. A physician's order is required for lab testing and is provided for you by our partner's physicians — no referral from your own doctor is needed.
- Fasting
- Fasting is required for this test — follow the collection lab's instructions.
- Preparation
- Preparation varies by test; some require fasting for several hours, while others do not. Always follow the specific instructions provided by the collection lab.
- Sample & visit
- A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
- Identification
- Bring the lab requisition form from your account. The collection lab may also ask for a government-issued photo ID.
- Turnaround
- 1-3 business days
- Availability
- Our partner lab does not serve ND, RI, NY, NJ, MD or HI. Confirm availability for your location with the collection lab.
Before you go
- Preparation varies by test.
- some require fasting for several hours, while others do not. Always follow the specific instructions provided by the collection lab.
Requirements are summarized from our partner lab's published policies. Preparation and availability can change — confirm current instructions with the collection lab before your visit.
What this test is
Diabetes testing is a group of laboratory tests that evaluate blood sugar levels and long-term glucose control. Common tests include fasting glucose, hemoglobin A1c, and sometimes an oral glucose tolerance test. These tests help identify prediabetes, diabetes, or monitor existing diabetes.
What it measures
- Fasting glucose — blood sugar level after not eating for at least 8 hours
- Hemoglobin A1c — average blood sugar over the past 2 to 3 months
- Random glucose — blood sugar at any time, regardless of when you last ate
- Oral glucose tolerance — blood sugar before and after drinking a sugary solution
What the test involves
Most diabetes tests require a standard blood draw from a vein in your arm, often after fasting. Some tests may use a small fingerstick or a urine sample, depending on the specific test ordered.
Why it is often ordered
A clinician may order diabetes testing to screen for high blood sugar, especially if you have risk factors such as family history or excess weight. It is also used to monitor blood sugar control in people already diagnosed with diabetes.
Preparation
Preparation varies by test; some require fasting for several hours, while others do not. Always follow the specific instructions provided by the collection lab.
How results are reported
Results are typically reported as numeric values for each marker, along with a reference range. Reference ranges can vary between laboratories, so your results should be interpreted in the context of the lab that performed the test.
Before you go
- Whether fasting is required for your specific test
- The lab's hours and whether an appointment is needed
- How and when your results will be shared
Cities
Diabetes Testing in Tennessee communities
Choose your city for local context and to order this test.