A member asked:

Is it true that fasting of 8h is must for blood plasma glucose level testing. one doctor said that fasting more than 8h give heigher values. i did about 13h and got 82mg/dl from lab. now i do not need hba1c or any test right?

A doctor has provided 1 answer

No worries: The same fasting blood sample works for Lipid Profile and Fasting Glucose testing. Usually, a 10-hour fast is adequate for either test but a patient should follow his doctor's or the lab's instructions. If only fasted for 8 hours but the lab asks for 10 or 12 hours, the lab might make the patient wait a few hours. Can do HbA1c if >100mg/dL blood sugar after 8 to 14 hours of fasting... no worries.

Answered 1/29/2020

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