What Is Synthetic Urine? A Manufacturer's Explanation

What is synthetic urine made to do?

A urinalysis instrument or a dipstick panel has to be checked against a sample whose properties are already known. Human samples vary from person to person and from hour to hour, and they carry biohazard handling requirements. A manufactured liquid with a stable, documented profile removes both problems, which is why laboratories, universities, device makers and training programs use one.

The useful properties are the measurable ones: a pH inside the human range, a realistic specific gravity, and the presence of the markers a panel looks for, principally urea and creatinine. A product that reads correctly on those measures behaves as a reference sample should.

What is synthetic urine used for?

• Calibrating and validating urinalysis equipment and dipstick panels. A known sample is what an instrument is checked against.
• Scientific research and product testing. Device and reagent developers need a consistent input.
• Medical and laboratory education. Students practise collection and analysis without handling human samples.
• Demonstrations. Trade shows, training rooms and product demonstrations.
• Adult novelty use. Pranks, film and theatre props, and fetish applications.

Buyers are responsible for compliance with applicable laws. Product legality and permitted uses vary by jurisdiction.

What is in synthetic urine?

A well-made product reproduces the profile a panel measures rather than attempting to copy every compound in a human sample. The properties that matter are:

Manufacturers do not publish full formulations, and a specific recipe is proprietary. What an accountable manufacturer will state is that the product is tested against a specification before release.

Premixed or powdered: what is the difference?

A premixed product arrives as a finished liquid in a sealed bottle, ready to use. A powdered product arrives dry and is combined with water before use. Premixed removes the mixing step and the measuring error that comes with it, and what you receive is what the manufacturer tested. Powdered stores dry for longer but adds preparation. Premixed bottles carry a stated shelf life from production, which is why a printed expiration date matters.

What does a complete kit contain?

Three things at minimum: the liquid, a heat source, and a way to read the temperature. An Upass 3 oz kit contains a premixed 3 oz bottle, two Hot Sacks air-activated hand warmers, an adhesive temperature strip, a dispensing cap, and a rubber band. The working range is 90 to 100 degrees F. Here is what a complete kit with a warmer contains.

How do you judge quality in this category?

Six things are checkable before you buy: who manufactures it, whether the box carries a lot number and expiration date, the sealed shelf life, whether temperature control is included, whether a formulation version is named, and where the product is authorized to be sold. The full comparison method is here.

Who makes Upass?

Safeguard Labs, in North Las Vegas, Nevada, has manufactured Upass continuously since 2009, 17+ years, with millions of kits sold. The current formulation is Upass 8.4. Upass is independently lab tested, and every batch is quality-checked in-house. Every box carries a lot number and expiration date printed next to the UPC, and sealed bottles carry a two-year shelf life.

Upass is sold in retail stores across the country. Online, upassurine.com is the only authorized seller, and we authorize no marketplace or reseller listings online.

Is "fake urine" or "fake pee" the same thing?

Yes. "Fake urine," "fake pee" and "synthetic pee" are consumer terms for the same category of laboratory and novelty products sold commercially as synthetic urine.

Frequently asked questions

What is synthetic urine?

Synthetic urine is a laboratory-made liquid formulated to reproduce the measurable properties of human urine, including pH, specific gravity, urea and creatinine. It is used as a reference and control material for urinalysis equipment, for research and education, and for demonstration and adult novelty use.

What is synthetic urine used for?

Calibrating and validating urinalysis equipment and dipstick panels, scientific research and product testing, medical and laboratory education, demonstrations, and adult novelty use.

Does synthetic urine expire?

Yes. Sealed Upass bottles carry a two-year shelf life with the expiration date printed on the box next to the lot number. Undated stock cannot be aged by the buyer.