Would I lose too much blood for doing a 2 hours Glucose Tolerance test?

Question

I heard they would take up to 2 blood samples during the glucose tolerance test. Would I be in danger of losing too much blood?

Sorry, I meant up to 5 samples during the test.

Answer 1

i am a pathology collector (14y) and with our GTTs you need to come in fasting we take as little as 3ml of blood ,give you 75g of GTT mix (tastes like a sweet lemonade) you sit for 2 hours (that is so you done use up the sugar to fast ) then we take a post 2hr blood test as little as 3mls of blood or if you are a hard collection it can be done by a finger prick and thats 1ml....so sweetie NO its not a lot of blood ....good luck

Answer 2

The average amout of blood taken for glucose levels during a tolerance is 5 ccs per draw. No more than that is needed. If you are stuck 5 times, then you would lose an average of 20-25 ccs of blood during the test.

That amount will not harm you in any way. The blood loss will be minimal and you won't even notice. Your body will simply make more to replace it. The only effects you may feel will be from the glucose drink (it might make you tired, sleepy, nauseous or feel chilled).

"Tweety" mentioned that "tiger top" tubes are used. She's right...in a way. The type (and color) of vacutainer used depends on the testing equipment in the laboratory. Where I work, we use green gel separator tubes. I have worked at another lab that used gray tubes.

EMT
type 1, insulin pump...and a lab technician

Answer 3

Think of it this way - if you donate blood, they only take a pint. A pint of blood would make many times the number of samples they'll take during your Glucose Tolerance test, so I wouldn't worry if I were you!

Answer 4

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Answer 5

You would lose around 5% of the blood volume that people lose when they donate blood. Each vial is about 5 ml or less (no more than 25 ml total) and blood donations are usually about 500 ml.

Answer 6

The tiger top Vacutainer that will be used for your blood draws pulls off 5mL of blood. 5mL is one teaspoon and times 5 draws is 5 teaspoons. Considering that you have about 5 liters of blood in your body, 5 teaspoons is a drop in the bucket. Does this reassure you?

Answer 7

Hi,I think you are getting excited for nothing.You are watched and taken care of by trained personal that do this work all day.They are constantly asking you how you feel and given special attention to be comfortable.Bring a good book and there is a TV probably available.So relax and not to worry.Good Luck.

Answer 8

I don't think so, I don't know how big your samples would be but when people give blood its usually quite a bit and they are fine. If it is a doctor doing it he/she probably (hopefully) knows what he/she is doing.

Answer 9

No
Tiny amounts are taken each time
No need to worry about blood loss

Answer 10

sorry!! they will not even be taking as much blood as the usual pint donation when you donate at the blood banks!! It will hardly be noticible!