As I understand, all synthetic urines are functionally the same, and your odds of passing with this method are dependent on your test site more than the brand you purchase. I used quickfix 6.3.

Verified the batch was good until January-March of 2025.

Tested at quest diagnostics.

Did not use at home THC test kits before hand. I smoke infrequently and regret not doing this.

I do not know what power setting my microwave is using.

Heated in the microwave in 2, 10 second sessions separated by ~20 minutes, ~3 hours before the test and activated the hand warmer. The warmer was cold ~30 minutes later but the temperature strip was working as expected. The instructions claimed the warmer would be good for 5 hours.

Heated the bottle again ~20 minutes before the test in 1 10 second microwave session, and 1 5 second session separated by about 10 minutes.

Drove to test site with bottle tucked into groin.

Passed.

Sporadic marijuana use is not worth this hassle.