Your Laboratory Test: A Patient's Guide to Testing, Sample Collection, and Results

A laboratory test is a procedure in which a sample of your blood, urine, or other body fluid or tissue is analyzed to help your doctor evaluate your overall health, screen for disease, diagnose symptoms, or monitor a condition you may already have.

The Amphetamine Confirmatory Saliva Test is a laboratory test that detects the presence of amphetamine-type stimulant drugs in your saliva (also called oral fluid). Unlike screening tests, this confirmatory test uses highly accurate methods like mass spectrometry to precisely identify and measure amphetamine compounds. This test is typically used to verify positive screening results or when definitive proof of drug use is required.

Your sample is usually collected at a clinic, hospital, or laboratory. A trained professional may draw blood from a vein in your arm, ask you to provide a urine sample, or take a swab from the area being tested, depending on what your doctor has ordered.

A saliva sample is collected by placing a special collection device in your mouth to absorb oral fluid. The process is quick, non-invasive, and does not require blood draw. You may be asked to not eat, drink, smoke, or chew gum for a certain period before sample collection to ensure accurate results.

Your doctor may order this test as part of a routine checkup, to help find the cause of symptoms you are having, to screen for certain conditions before they cause problems, or to see how well a treatment is working over time.

This test may be ordered for various reasons including: workplace drug testing programs, legal or forensic investigations, substance abuse monitoring, pre-employment screening, or as part of a comprehensive drug evaluation when a screening test shows a preliminary positive result.

Your results are compared with a reference range, which is the range of values typically seen in healthy people. A value outside this range does not always mean you are ill, so review your results with your doctor, who can explain what they mean for you.

This is a cutoff-based test (qualitative). Results are typically reported as either 'detected' (above the cutoff/threshold) or 'not detected' (below the cutoff). A 'detected' result means amphetamine or related substances were found at levels above the testing threshold. The specific cutoff value may vary by laboratory. A confirmatory positive result provides strong evidence of amphetamine use.