What is an SVT?
The abbreviation SVT stands for Sample Validation Test. This test is used in conjunction with a urine test in order to check if the urine sample has been in any way adulterated, checking the creatinine level, specific gravity, and pH of the urine sample. Oxidants: Oxidising agents such as bleach and hydrogen peroxide are commonly used adulterantants that can mask the presence of some drugs. Normal human urine should not contain oxidants. Specific gravity: This parameter effectively measures how concentrated the urine sample is, as a higher or lower amount of minerals and salts contained in urine will increase or decrease the specific gravity, respectively. Urine always has a higher specific gravity than water, so any addition of water to a urine sample will reduce the specific gravity and be detectable with an SVT. pH: This is a measure of a liquids acidity or alkalinity. If a urine sample is adulterated to be highly acidic or alkaline, the chemistry of the test can be affected so that
