The do-it-yourself test is made by company ‘Bio Sure UK’ and can be bought online, BBC reported. It works just like a pregnancy test, measuring levels of antibodies in a person’s blood.
The device analyses a small droplet of blood, taken from the finger-tip using a lancet. Two purple lines denotes a positive result.
The company recommends attending sexual health clinics for advice and further blood tests, if both lines appear.
According to health officials, an early diagnosis will help people get a treatment soon and also prevent serious complications.