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Hi @Kalisun1 and welcome to the forum. The finger prick meter test only measure your blood glucose level at that moment. It isn't 100% accurate, and your levels might be influenced by other factors like stress and how recently you have eaten, so it can't be used to diagnose diabetes. It is only a rough guide to what your BG level is like at that moment.
The HbA1c blood test takes a blood sample which is sent to a lab for analysis. It measures the blood glucose level over the last 12 weeks which is the time sugars take to pass out from the blood, so it is the more accurate method of determining your long term BG levels.
The HbA1c blood test takes a blood sample which is sent to a lab for analysis. It measures the blood glucose level over the last 12 weeks which is the time sugars take to pass out from the blood, so it is the more accurate method of determining your long term BG levels.