The CheckMate 5 Minute Infidelity Test Kit^™ created the underwear testing revolution in 1999 and was the first product or service of its kind to be offered to consumers. Described by some as, "The ultimate men's product" CheckMate is the non destructive home use semen detection test used on women's underwear to instantly uncover evidence of sexual activity outside of the relationship. Yes or no results are obtained immediately without staining, cutting, or damaging the article in any way.

A condition known as flowback causes women to continue to secrete small amounts of semen for up to 72 hours after sexual intercourse, even after showering. This slow gradual flow back of the male partners semen from the woman's body results in dried semen stains in her underwear that can instantly be detected with CheckMate.

No stain - No damage - Instant results. Normal vaginal secretions will not affect the test.

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