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At what time should I take metformin the day before an glucose tolerance exam?
A year ago my sugar and insulin numbers where too high. My doctor prescribed metformin and told me my numbers should improve if I lost the weight (I was overweight at that time). If I want to do the “glucose tolerance test” again to confirm or discard the possibility of having diabetes, at what time should I take the metformin the day before the test or I shouldn´t take metformin at all the day before?
How long does metformin stay in your body?? I do not want metformin to mask/change my glucose/insulin numbers
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141598 tn?1355675363
Per my PCP, I take my Metformin after my tests. Ask your doctor what he/she prefers.
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Yes, I take metformin after the test. But does that mean I do not take metformin the day before? When is the last time you take metformin before the exam?
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559053 tn?1274916974
No stoppage, I continue with my daily schedule as I do a fasting glucose test and an A1c test. The former every 2 months, the latter every 3 months.

Are testing your glucose with a home meter? What are your glucose levels preprandial [b4 breakfast] and postprandial [2-3 hrs after a meal]? If your levels remain elevated above normal do not stop the Metformin. If you have normal fasting levels [preprandial] and normal postprandial levels notify your doctor of your intentions to stop Metformin 72 hrs prior to the test. Do NOT stop unless your doctor authorizes you to do so.
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141598 tn?1355675363
cookie - I had problems signing in due to badware/malware on my rig. While at a friends I used her username to post the above. Call your doctor and ask what he/she recommends.
WR
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My preprandial numbers are ok. My postprandial numbers vary.
Thank you for the information
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