Yes, home A1C test kits are widely available at pharmacies like CVS, Walgreens, and Walmart, and most deliver results in about five minutes using a simple finger prick. These kits measure your average blood sugar over the past two to three months, the same thing your doctor checks at routine visits. They cost roughly $25 to $50 without insurance, require no prescription, and are FDA-cleared for consumer use.
How Home A1C Kits Work
Home A1C kits use a small drop of blood from a fingerstick, similar to checking blood sugar with a glucose meter. The blood is applied to a test cartridge or strip, and a built-in reader analyzes the percentage of hemoglobin in your red blood cells that has glucose attached to it. That percentage is your A1C result.
The most common brands on the market include the A1CNow Self Check (also sold as TRUE+ A1C Now Self Check), the CVS Health A1C At Home Test Kit, the Walgreens At Home A1C Test Kit, and the ReliOn FastA1c Test sold at Walmart. All of these are instant point-of-care kits, meaning you get your number at home within five minutes rather than mailing a sample to a lab.
Mail-in options also exist through companies like Quest Diagnostics and similar lab services, where you collect a blood sample at home and send it for professional analysis. Results from mail-in kits typically take one to two weeks. The tradeoff is that mail-in samples are processed on full-size laboratory equipment, which can be more precise than a handheld device.
How Accurate Are They?
Home A1C kits are reasonably accurate, but they aren’t as precise as a lab draw. The FDA requires that over-the-counter A1C devices demonstrate a total error of 6 percent or less when compared to standardized laboratory methods. In practice, that means if your true A1C is 7.0%, a home kit could read anywhere from about 6.6% to 7.4% and still meet federal standards.
Clinical studies back this up. One comparison found that the A1CNow device had a correlation of 0.884 with lab results across 99 paired samples, which is strong but not perfect. The average home reading in that study was 7.38% compared to a lab average of 7.53%, a small but statistically significant difference. Another study found that different point-of-care devices could read slightly high or slightly low compared to lab values, with average differences of about 0.15 to 0.19 percentage points.
For most people, this level of accuracy is useful for tracking trends between doctor visits. If your home kit shows your A1C rising from 6.2% to 6.8% over six months, that trend is meaningful even if the exact number is slightly off. But if you’re right on the border between prediabetes and diabetes, a home test alone isn’t enough to make that call. A lab test is the standard for diagnosis.
What Your A1C Number Means
The American Diabetes Association defines three ranges:
- Below 5.7%: Normal blood sugar levels over the past two to three months.
- 5.7% to 6.4%: Prediabetes range, meaning blood sugar has been higher than normal but not yet at the diabetes threshold.
- 6.5% or higher: Diabetes range.
If you already have diabetes, your doctor has likely given you a personal A1C target. For most adults with diabetes, the general goal is below 7%, though your target may be different depending on your age, health, and how long you’ve had the condition. Home testing lets you check your progress between appointments, which can be especially helpful if you’ve recently changed your diet, exercise habits, or medication.
How Often to Test at Home
Clinical guidelines recommend A1C testing at least twice a year for people with stable, well-controlled diabetes. If your treatment has recently changed or you’re not meeting your blood sugar goals, testing every three months is more appropriate. Home kits fit neatly into that schedule as a between-visits check, giving you data to bring to your next appointment rather than waiting months to find out whether changes are working.
Testing more frequently than every three months won’t give you new information. A1C reflects a rolling two-to-three-month average, so checking monthly would mostly recapture the same window of time.
When Home Tests Can Be Misleading
A1C measures glucose attached to hemoglobin inside red blood cells, so anything that changes your hemoglobin or red blood cell lifespan can throw off the result. This applies to lab tests too, but it’s worth knowing before you rely on a home kit number.
Several conditions can cause falsely high or low readings. Iron-deficiency anemia, sickle cell disease, and other hemoglobin variants (including hemoglobin C, D, and E) can interfere with results. Significant kidney disease and liver failure also alter red blood cell turnover in ways that skew A1C. Pregnancy changes blood volume and red blood cell production enough to make A1C less reliable. Recent blood loss or a blood transfusion will also distort the reading.
Hemoglobin variants are particularly important to be aware of because they’re common and often undiagnosed. There are hundreds of variants, but sickle cell trait alone affects about 8% of Black Americans. If you carry a hemoglobin variant, some testing methods will give inaccurate results while others won’t, and you generally can’t tell which method a home kit uses. If your home A1C results don’t match how you feel or what your daily glucose readings show, that disconnect is worth mentioning to your doctor.
Tips for Getting the Best Results
Home A1C kits are straightforward, but a few things can affect your reading. Make sure the kit hasn’t expired, as outdated reagents lose accuracy. Store it at room temperature rather than in a bathroom or car where heat and humidity fluctuate. Follow the instructions for blood sample size exactly. Too little blood on the test strip is the most common user error and can produce an unreliable result.
Run the test at a time when your hands are warm and clean, which helps you get an adequate blood drop without squeezing your finger too hard. Excessive squeezing can dilute the sample with tissue fluid. If you’re comparing home results to a recent lab draw, keep in mind that a difference of up to half a percentage point can fall within normal variation between methods. The trend over time matters more than any single number.