Specific gravity is a ratio of the density of the urine sample to the density of water.

Adulterants are foreign substances either ingested or added directly to urine specimen to prevent the detection of drug in the sample. Commonly uses adulterants are promoted as “cleansing agents”, these substances can be found in house hold items or chemical additives obtained through the internet.

Examples of adulterants include:

• Baking soda
• Bleach
• Detergent
• Eye drops
• Liquid chlorine bleach
• Liquid drain cleaner
• Glutaraldehyde
• Iodine tincture
• Pyridinium chlorochromate
• Vinegar
• Water

Some commercially available products that are ingested prior to providing the urine specimen that include:

• Amber 13
• Clean-X
• Clear Choice
• Instant Clean ADD-It-ive
• Lucky Lab LL418
• Klear
• Krystal Kleen
• Mary Jane Superclean 13
• Purafyzit
• Stealth
• Test Clean
• THC-Free
• Urine Luck 6.3
• UR’n Kleen
• Whizzies