How accurate is this test?
Home A1C tests have been found to be trusted. However, the results of a home A1C test should not be used to make major medical steps on your own; they should always be used with standard medical care. Document your home testing dates and results, and share them with your doctor.
Several factors exist that may affect the accuracy of home A1C tests, so speak with your doctor to know if they are right for you. Some of these factors include pregnancy [4], rheumatoid factor [5], and blood disorders, such as sickle cell disease, anemia [6], transfusion, and blood loss.
Conclusion
Home A1C testing can be practical because it helps you understand how well your blood sugar level is being controlled. They are reliable, but your results should always be reviewed by your doctor.
References
[1] https://www.britannica.com/science/hemoglobin
[2] https://labs.selfdecode.com/blog/glucose/
[3] https://www.niddk.nih.gov/health-information/diabetes/overview/what-is-diabetes
[4] https://www.nhs.uk/pregnancy/
[5] https://medlineplus.gov/lab-tests/rheumatoid-factor-rf-test/
[6] https://www.webmd.com/a-to-z-guides/understanding-anemia-basics