can i drink coffee before fasting blood test
Though several tests might be accurate when drinking coffee before the test, the fasting blood sugar test will not be. FBS or fasting blood sugar, measures the amount of glucose in the blood. This is actually used when you are being examined for diabetes or other ailments. The reason behind drinking coffee before the test is that coffee can be absorbed by the body very fast, especially when caffeine is present. Caffeine can boost blood sugar levels and it can give an inaccurate result on the FBS test. In addition, coffee beans are actually made of 40% sugar.