10-12 hours fasting is essential for Lipid Profile (Cholesterol), Blood glucose fasting, Apolipoproteins A1 & B, Insulin, Homocysteine, common growth hormone and all health check up plans. Fasting allows you to only drink water in moderate quantities.
Regular diet and medication should be followed for at least three days prior to undergoing the tests and on the same day of the test.
For blood sugar post meal one should note the time of completion of meal and report to the lab exactly at 2 hours after completion. For post glucose time is noted after drinking the required amount of glucose and then exactly at 2 hours one should report to the lab. For both these tests it is very important that one does not eat or drink anything during the two hours except for water.
A positive blood culture report is ready after 72 hours, whereas an interim telephonic positive report can be given within 24 hours. If the test is negative, then the final report is ready after 5 days.
For a routine urine test, urine sample should be collected in a bottle provided by the lab after cleaning the area well with water. A first morning midstream urine sample should be collected for a culture test ensuring proper cleaning of the area with savlon before collection. Also, the sample should be collected in a sterilized culture container provided by the lab and submitted as early as possible.
For a GTT one should be fasting for at least 10 hours. Total 5 blood samples are collected; 1st sample is fasting blood sugar sample. After collection of the 1st sample, 75 grams of glucose mixed with water is given to drink and the time noted. For e.g. if glucose was taken at 9 am the following samples are collected at 9:30 am, 10 am, 10:30 am and the last one at 11 am. One should not eat or drink anything until completion of all the sample collections.
Collect an appropriate can from the lab. Let the first morning urine sample be discarded. Collect every sample from the second sample onwards until the first sample next morning. Ensure mixing of every sample with the preservative that is added in the can.
4-5 hours fasting is required prior to examination. (Fasting for solids) Fluid (Water, Juice, Clear soup, Coconut Water, Black Tea and Coffee) is allowed. Solid foodstuff, Milk, & Milk products (Cheese, Butter, Paneer) are not allowed. (Because it contracts the Gall Bladder).
Not to pass urine for 2 hours prior to examination. During those 2 hours drink 5-6 glasses of water Patient can take all their medicines, e.g. Tablet for Blood Pressure (BP) and any drugs that are to be taken in the fasting state. Diabetic patients should not take their tablets.
Moderately full bladder. Do not pass urine for at least for 1 hour. During this 1 hour drink 2-3 glasses of water. For females who are 4-5 months pregnant- Full bladder is not required.
Minimum 3 days of abstinence is required.
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