Quick Fix® Plus 6.3 Synthetic Urine 3 Ounce

Original price was: $45.00.Current price is: $39.95.
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Quick Fix® 6.3: The original and finest premixed synthetic urine. Our patented formula replicates human urine perfectly with ideal levels of specific gravity, uric acid, pH, and creatinine. Get the complete 3oz kit for quick and easy readiness in minutes.

1 - 2 pouches
$35.95 (10% off)
3 - 4 pouches
$31.95 (20% off)
5+ pouches

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SKU: LABS-QFIX-03 Category:

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Your Favorite Quick Fix® with a NEW Look

In the ever-evolving landscape of synthetic urine, Quick Fix® consistently leads the way, establishing a benchmark for dependability and ingenuity. Our flagship product, Quick Fix® 6.3, has undergone a recent packaging enhancement! We have revolutionized our box into an ergonomic pouch! This progressive change underscores our dedication to maintaining a pioneering position within the synthetic urine sector, introducing heightened convenience and innovation to benefit our esteemed clientele. Want to read more about the recent package change to Quick Fix® Plus? Read the official press release here!

Pre-Mixed Synthetic Urine

Biochemists created Spectrum Labs’ synthetic urine in a state-of-the-art laboratory. With our patented Biocide Protection, you can rest assured that Quick Fix® 6.3 fake urine will be fresh and bacteria-free. It’s your very best choice for a clean pee sample. We also ensured that Quick Fix® balances specific gravity, uric acid, pH, and creatinine so that the smell resembles real urine. 

Our easy-to-use synthetic urine kit contains everything you need to simulate real human pee. It is premixed and ready to go within minutes. We even include a heat pack and temperature strip to ensure the product is between 94-100°. This is the temperature range that real urine comes out of the human body.

Don’t forget to add our new Leg Strap, Ankle Strap, and Briefs, made for anyone who needs to carry their hand warmer comfortably and Quick Fix® covertly.

Quick Fix® 6.3 Fake Pee is extremely good at mimicking human urine. Most people can’t tell the difference between the real stuff and our fake urine. Perfect for pulling a pee prank on an unsuspecting friend!

Millions of men and women have successfully used Quick Fix® Plus 6.3 synthetic urine. It is the most trusted name in fake urine and has been for over two decades.

What makes Quick Fix® Synthetic Urine different?

Spectrum Labs has designed Quick Fix® clean pee from the ground up to have all the standard stuff found in clean urine. We are also the only synthetic urine with Biocide Protection. Quick Fix® is Premixed, meaning you’re not left doing a chemistry experiment before using it—no need to mix in heat activators and powders with water to pray that you got it right. Heat in a microwave for 7-10 seconds, shake the hand warmer, and you’re ready.

What is Biocide Protection?

Your control sample must contain Biocide Protection. Our patented formula kills and prevents microbial growth. This means our synthetic pee will stay fresh for up to 2 years, even after reheating. No other synthetic urine can outlive Quick Fix® thanks to our innovative research and developments. 

Fake urine without Biocide will go bad fast. When urine is exposed to bacteria, it begins to break down!

Most rip-off products do not contain Biocide and they try to make it sound like a good thing. But Biocides are not even detected, like in a nicotine test for example. Other synthetic urine brands are prone to going bad often and get cloudy without a biocide, yuck!

What about counterfeit Quick Fix®?

Not all synthetic urine is created equal. Most cheap knockoff urine serves only to rip off the end user. Spectrum Labs actively goes after these counterfeit products.

We have won multi-million-dollar judgments against individuals infringing on our patented formula. The most significant way to avoid counterfeit products is to buy directly from us (, the manufacturer.

We ensure that every batch of Quick Fix® balances specific gravity, uric acid, pH, creatinine, and a smell that resembles real urine.

Why buy directly from Spectrum Labs?

Our website is the official home of Quick Fix® – we are the creators of the iconic fake pee! Buying your Quick Fix® from will ensure you receive the newest, and freshest available batch. We regularly test every batch to ensure it meets the highest standards. Every bottle of fake urine bought from our site is the latest and greatest formula.

Despite what some shady online retailers claim, Spectrum Labs is the manufacturer, patent and trademark holder of Quick Fix® Synthetic Urine. We invented fake pee and continue to update it regularly.

We know some sites sell fake, knockoff or possibly expired Quick Fix 6.3. When you buy from a shady online seller, you risk getting ripped off by counterfeit pee. Always buy from the manufacturer to get the real stuff!

Quick Fix® is an innovative product with many uses and applications. Here are a few:

Fetish Use

We’re not here to kink shame anyone. What you do in your private life is your own business. But if you’re into that sort of thing in the bedroom, use clean pee. So many diseases can be transferred via human body fluids; playing safe with fake pee is essential.

Product Testing

Are you looking to simulate real human urine for product testing? Diaper manufacturers can use our synthetic product to understand how real urine would affect their products. Cleaning chemical companies can use Quick Fix® to demonstrate the effects of cleaning solutions on human pee. The possibilities are endless.

This product has been issued multiple patents and is afforded the rights and protections of the United States Patent Office. U.S. Patent No. 7,192,776 and U.S. Patent No. 9,128,105.


Formula 6.3 is the current formula. Formula information is at the bottom of the box below the “Contents” description. Quick Fix® Plus products with formula numbers BELOW 6.2 should be returned to Spectrum Labs for a FREE exchange to the current formulation. See our “Exchange Policy” for details on exchanging products. We cannot ship this product to KY, NJ, UT or outside the Continental U.S. UPC: 782804427480


  1. Activate the hand warmer before heating Quick Fix® Plus (it may take 30-45 minutes for the hand warmer to heat up).
  2. Shake the Quick Fix® Plus bottle and microwave on high for 7-10 seconds. The temperature strip should display a green dot in a range of 94° – 100°F. The synthetic urine is overheated if the bottle feels warm in your hand but does not show a reading on the temperature strip. Let it cool down gradually until you see a reading on the temperature strip. If the synthetic urine temperature is below 94°, heat again in the microwave for a few more seconds until you see the green dot on the temperature strip between 94° – 100°F.
  3. Attach the hand warmer with tape or a rubber band to the back of the bottle opposite the temperature strip. This will provide prolonged heat, keeping the bottle temperature near 100°F for approximately five hours.
  4. If you can’t microwave the Quick Fix® Plus, attach the hand warmer to the bottle at least 1 hour before use. Shake the bottle before and after heating and before pouring into the cup. **If your product remains unused, it can be reheated repeatedly.
  5. Always check your batch number in the batch validation tool on our home page before using the product. Batch numbers are printed on the bottle. Expired products will be exchanged for retail customers at no charge.