What blood test confirms diabetes?

Hemoglobin A1c is the primary test used to diagnose diabetes. An A1c of 6.5% or above confirms type 2 diabetes. Between 5.7% and 6.4% indicates prediabetes. The A1c does not require fasting and reflects average blood sugar over 3 months.

Do I need blood tests before starting Ozempic or Wegovy?

Yes. Before starting any GLP-1 medication, most providers require a baseline A1c, CMP, and Lipid Panel. All three are available through Personalabs — order online and get results in 24 to 48 hours.

Can I order diabetes blood tests without a doctor?

Yes. Personalabs provides the physician-approved lab order with your purchase. Order any diabetes test online, visit any Labcorp location, and get results within 24 to 48 hours. HSA and FSA eligible.

How often should I get a diabetes blood test?

For general screening, test every 3 years if results are normal. If you have prediabetes, test every 3 to 6 months. If you are on GLP-1 therapy, most providers recommend A1c testing every 3 months for the first year then every 6 months once stable.

Diabetes Blood Tests — A1c, Glucose & GLP-1 Labs

Diabetes Blood Tests

Over 38 million Americans have diabetes and another 96 million have prediabetes — most without knowing it. Blood tests for diabetes are the only reliable way to confirm your blood sugar status, establish a baseline before starting GLP-1 medications like Ozempic or Wegovy, and monitor your levels over time. Personalabs offers the full range of diabetes blood tests — A1c, fasting glucose, insulin resistance panels, and comprehensive diabetes profiles — all fulfilled through Labcorp at 4,000+ patient service centers nationwide. Order online and get results in 24–48 hours.