How To Prepare
Do not eat or drink anything (other than water) for 10 to 12 hours
before the test.
Many medicines may affect the results of this test. Be sure to tell
your health professional about all the nonprescription and prescription
medicines you take.
Talk to your doctor about any concerns you have regarding the need
for the test, its risks, how it will be done, or what the results will mean. To
help you understand the importance of this test, fill out the
medical test
information form
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