Risks and precautions Be sure operator indicates on lab slip time when you last ate, time blood sample was taken and time any pretest medicine was given. Request another sample to ensure accuracy. Avoid strenuous exercise after eating. You may be asked not to take this medication before the test. Roll up sleeve only.
Discomfort disappears when the test is finished.
Equipment used Needles, syringes and heparinized collecting tubes. Sterile, disposable equipment prevents contamination or spread of infection. There is no risk of becoming infected with the hepatitis virus, AIDS virus or any other germ. Description of test Technician, doctor or nurse applies tourniquet or blood-pressure cuff to arm. Skin over the vein to be stuck is cleaned with alcohol or other antiseptic on a piece of cotton.