A1C Home Test Kits: What They Can and Cannot Do
Home A1C kits are meant for monitoring, not diagnosis. Some are FDA-cleared. Treat a home result as information to share with your clinician, who can confirm it with a lab test.
Two kinds of home kit
Mail-in kits. You collect a small finger-prick sample at home and send it to a laboratory. The FDA cleared at least one such service for over-the-counter use. Its FDA review states the test is not to be used to diagnose or screen for diabetes.
Instant (point-of-care) kits. You test at home and read the result in minutes. The FDA cleared a multi-use A1C test for home and professional use in monitoring glycemic control in people with diabetes. Always read the kit’s own intended-use statement, because it differs between products.
What a home kit can do
- Give you a number between clinic visits, if your care team wants you to track A1C.
- Help you see whether a change in routine is moving the average over the following months. A1C only changes over two to three months, so testing more often than about every three months is rarely useful.
What it cannot do
- Diagnose diabetes or prediabetes. The ADA says diagnosis relies on lab testing, and point-of-care A1C used for diagnosis should be limited to devices approved for it, in certified laboratories, run by trained staff.
- Replace your meter or CGM. A1C is an average. It does not show highs and lows during the day.
- Overcome conditions that affect A1C. The ADA lists anemia, some hemoglobin variants, pregnancy and certain treatments as situations where A1C can mislead.
Questions before you buy
- Does my care team want me to test at home, and how often?
- Which kit do they trust, and what do they do with the result?
- Is the kit FDA-cleared, and does its label say it is for monitoring or for other uses? You can look up a clearance number in the FDA database.
- Is the cost worth it compared with a lab test your insurance covers?
Once you have a number, the A1C calculator turns it into an estimated average glucose. We may add retailer links later; if we do, they will be clearly marked, as described in our affiliate disclosure.
Frequently asked questions
Can a home A1C kit diagnose diabetes?
No. The FDA review of one cleared mail-in kit states it is not to be used to diagnose or screen for diabetes. Diagnosis needs a lab test ordered by a clinician.
Are home kits as accurate as a lab?
They are cleared for a defined use, but they can differ from a lab result, and some conditions affect A1C itself. Bring the result to your clinician and ask whether to confirm it.
Do I need to fast?
No. NIDDK says the A1C test can be done at any time of day without fasting.
How often should I test?
The ADA suggests an A1C at least twice a year, and about every three months when goals are not met or treatment has changed. Ask your care team how a home kit fits that plan.
Information only, not medical advice. Your care team may set different targets for you, and only a lab test ordered by a clinician can diagnose diabetes or prediabetes. See our medical disclaimer.
Sources
- FDA 510(k) review K141944: Home Access A1C test
- FDA 510(k) K090413: A1CNow
- FDA: Home use tests
- ADA Standards of Care in Diabetes—2026, Section 2: Diagnosis and Classification
- ADA Standards of Care in Diabetes—2026, Section 6: Glycemic Goals
- NIDDK: The A1C Test & Diabetes
Last reviewed: by the Diabetes Blogs editorial team. Information only, not medical advice.
