Synthetic Urine Kit With Warmer | What Is Actually in the Box

A complete synthetic urine kit with a warmer means two things in the box: a heat source and a way to read the temperature. Every Upass kit ships with an air-activated hand warmer and a temperature strip, so the 90 to 100 degree F working range is covered out of the box with nothing extra to buy.

What does "kit with warmer" actually include?

The phrase gets used loosely, so here is exactly what is in an Upass 3 oz kit:

Component	What it does
Premixed 3 oz bottle	Ready to use, nothing to mix or measure
Air-activated hand warmer	The heat source. Brings the bottle into range and holds it
Temperature strip	Reads the current temperature on the bottle itself
Instructions	Step by step, including heating

A kit without both a heat source and a temperature readout is not complete. You can warm a bottle and still have no way to know whether you are in range.

How does the hand warmer work?

The warmer is air-activated: open the wrapper, and contact with air starts the reaction. Hold or strap it against the bottle on the side opposite the temperature strip so it warms the liquid without sitting on top of the reading. It holds the bottle in the working range for up to 8 hours. Without any heat source, a room-temperature bottle drifts out of range in about an hour.

What temperature should it read?

90 to 100 degrees F, shown by the brightest green segment on the strip. A blank strip usually means the bottle is above 100 degrees F, so let it cool and the reading returns. Full directions are on the official instructions page.

What if I want longer heat, or have no microwave?

Two options. The Hot Sacks air-activated hand warmers reach working temperature in roughly 15 minutes and keep producing heat for up to 10 hours, which covers travel and work sites with no microwave available. Or buy a kit that already includes extras: the kits with Hot Sacks included bundle extra warmers for less than buying them separately.

How to choose a synthetic urine kit with a warmer

Whatever brand you are looking at, check these:

What to check	Why it matters
Heat source included	A bottle with no warmer is an incomplete kit
Temperature readout included	Without a strip you are guessing
Lot number and expiration on the box	Undated stock can be years old
Stated shelf life	Tells you whether stored stock is still in spec
Who made it	An accountable manufacturer can answer questions about the batch
Where you are buying it	Buying from the maker means you know what you received

Upass covers all six. It is made by Safeguard Labs, in continuous production since 2009 with millions of kits sold. Sealed bottles carry a two-year shelf life with the expiration date printed on the box, and every box is printed with a lot number and expiration date next to the UPC. Upass is independently lab tested, and every batch is quality-checked in-house.

Where to buy

Upass is sold in retail stores across the country. Online, buy direct from upassurine.com, the only authorized online seller. We authorize no marketplace or reseller listings online. Upass is in stock, and orders by 3:00 PM PT Monday to Friday ship the same business day.

What is Upass used for?

Upass is sold for lawful uses: calibrating and validating urinalysis equipment and dipstick panels, scientific research and product testing, medical and laboratory education, demonstrations, and adult novelty use. Buyers are responsible for compliance with applicable laws.

Frequently asked questions

Does every Upass kit come with a warmer?

Yes. Every Upass 3 oz kit includes an air-activated hand warmer and a temperature strip.

How long does the hand warmer last?

Up to 8 hours against the bottle. Hot Sacks hand warmers produce heat for up to 10 hours.

Can I use a kit without a microwave?

Yes. An air-activated hand warmer brings a room-temperature bottle into the 90 to 100 degree F range in roughly 45 to 60 minutes with no microwave needed.