If you visit a hospital that can do the A-5 test in the afternoon, you can go to the hospital in the afternoon to have blood drawn for this test. If the test is not done in the afternoon, the hospital will keep the blood collected for testing the next morning, but this will not affect the results of the test. The A-5 test assesses the status of thyroid function in the blood and includes T3, T4, free T3, free T4 and TSH. If a patient is considered to have an abnormal level of thyroid hormones in the body, the test can be used to determine whether the thyroid gland is actually functioning abnormally. When a patient has hyperthyroidism, the patient will have higher than normal T3, T4, free T3 and T4. When a patient has hypothyroidism, the patient will have a lower than normal T4, T3, free T4, and T3.