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پاسخگوی آرامش : 02172493

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For which blood tests should I fast and how many hours of fasting is enough

One of the most commonly asked questions when doing a test is which blood tests should you fast for and how many hours of fasting is enough?

FBS: Fasting blood sugar, it is necessary to eat nothing 8 to 10 hours before this test and fast.

2hpp: Sugar is measured two hours after a meal, which is two hours after the first meal.

HbA1C: This test shows the average blood sugar for three months. Therefore, it is measured once every three months. No need to fast, but preferably do not eat two hours before the test! It is noteworthy that HbA1C was discovered by the Iranian physician Samuel Rahbar in 1969 and revolutionized the control and treatment of diabetes.

CBC: Indicates blood cells that can be used to detect anemia, blood pressure, infection, etc. Because any change in red blood cells may be effective in interpreting HbA1C correctly, it is measured with HbA1C every three months. This test does not require fasting.

Urea, cr: Urea and creatine show kidney function. Normally, they are measured once a year and do not require fasting.

AST, ALT, ALP: Enzymes of the liver and bile ducts, the elevation of which may indicate liver damage. They are usually measured at least once a year. They do not need to fast, but for ALP (alkaline phosphatase) it is better to fast. Many drugs have hepatic excretion, so one of the conditions or the continuation of these drugs is the normal results of the mentioned enzymes.

TSH: Thyroid function is a very effective factor in controlling blood sugar. There are many cases in which hypothyroidism is the cause of failure in the treatment of diabetes, but it is far from the therapist and diabetic. Therefore, by performing TSH test, people are screened for thyroid diseases and if the result is disturbed, the doctor will request additional tests such as Anti TPO, T3 T4. None of these tests, like the TSH test, require fasting.

LDL, HDL, cholesterol and triglycerides: High blood fats The risk of important diseases such as cardiovascular disease, stroke, fatty liver, etc. Therefore, it is necessary for diabetics to measure blood fats annually. To test for blood lipids, you need to fast for about 10 to 12 hours before the test, although water intake is not prohibited.

U / A (Urine Analysis): This test is the key to diagnosing many disorders, including kidney function, urinary tract infection, kidney stones, protein excretion, and so on. Although it does not require fasting, it is best to measure the first sample in the morning.

U / C: Urine culture, this test is sometimes requested to definitively diagnose the infection and select the appropriate antibiotic. The best example of urine culture and analysis is the middle sample of urine, that is, fill the urine test container shortly after the onset of urination. It also does not require fasting.

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