Is blood sugar levels checked before breakfast?
If you have diabetes, then you need to ask your doctor how (s)he would have you check your blood sugars ie before meals or after. This is so because the answer depends on many factors such as whether or not you are on medication which can lower the blood glucose below normal.
If you do not have diabetes, then I suggest you do not check your sugars at home. First ascertain if you really have diabetes or not.
When I see someone like you in my practice, I typically order the following blood tests in addition to a detailed physical examination:
CBC (Complete Blood Count, also known as Hemogram; includes Hemoglobin, WBC and Platelet counts)
Electrolytes (Sodium and Potassium in particular)
HbA1c (Glycosylated Hemoglobin = your 3 month glucose average)
Liver function tests (SGOT , SGPT, Albumin, Bilirubin, Alkaline Phosphatase)
Kidney function tests (BUN, Creatinine)
25 hydroxy Vitamin D
None of these tests require any fasting and can be done at any time of the day
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