Crime Scene Semen Detection Test Strips, Pack of 5

I was lab trained, so I understand scientific controls. It works perfectly. I got no false-positives and tested it with known samples. To find the exact location you can use a 395 nm blacklight, so it fluoresces bright blue/yellowish. Fluids that are not semen show a very pale gray/pink. Semen shows dark purple, you can't miss it. Even a small spot gives the dark purple result. The higher the concentration, the darker purple it is. There was one area that was almost black there was such a high concentration. It also works on stains that are old. If you have a lot of samples, you can cut it into little strips and use regular Q tips. You do not want to contaminate the strips by touching them, so make sure whatever you touch to the strip surface is sterile. I may add pics at a later date.

So I was out of town and when I came home I found toilet paper with fresh yellowish clear fluids. I tested the strip on my own semen and it instantly turned dark purple. Now everything else was pinkish and eventually turned dark purple but took like an hour. Hypothetically if my girl were cheating she would have wiped it off of her vagina which means it would be a mixture of everything. I'm unsure because of the fluids being mixed, and should it be pink and only pink or is it normal to turn purple after a while?

I started with a positive specimen to be the baseline for results…. But they were inconclusive across the board. The depth of test result was different on every strip making it almost impossible to determine accurate results. I think I may have gotten the strips and/or the specimen too wet but it said to soak for one minute on there instructions. No contact info for company for more accurate directions or customer service to ask what the color depth guidelines are for low-to medium- to high intensity purple.

Does what it's supposed to. Very easy to use - unlike many other test kits.

Worked well and quickly identified stain. Really liked that it didn't require messy mixing of solutions like some other brands. Just a few drops of water on the stain, swab it, apply swab to media and the results appear within seconds. Nice and quick.

For those of us who can’t trust our man! 😭 Works well if you follow the instructions, but if you’re already at the point of buying something like this… you know the truth.

Is this positive or negative? Instructions are pretty unclear

This works great, you have to know how to use them but they work perfect. I’ve tested them on lots of other substances to validate the results and I’ve NEVER had a false positive. The one time I caught my ex with a stain on his jeans, he said “he did “it” alone before a party”... after going through his phone a month later he was out with his side bitch before coming to my house and sleeping with me. Guys suck, and if you have to choose between trusting the strip or the guy, trust these strips. Pro tip; cut them into 3s and triple your tests.

It works easy to use.

Tried with a control and this didnt work. The instructions say the paper should change colour but there wasnt any change, even for the control while should have turned positive.