Card security code. 1  The card security code is located on the back of MasterCard, Visa, Discover, Diners Club, and JCB credit or debit cards and is typically a separate group of three digits to the right of the signature strip.
A urinalysis is a test of your urine. A urinalysis is used to detect and manage a wide range of disorders, such as urinary tract infections, kidney disease and diabetes. A urinalysis involves checking the appearance, concentration and content of urine. Abnormal urinalysis results may point to a disease or illness.
A nucleic acid test, often called a NAT, (or nucleic acid amplification test - NAAT) is a molecular technique used to detect a virus or a bacterium. These tests were developed to shorten the window period, a time between when a patient has been infected and when they show up as positive by antibody tests.