Itchy, Burning, or Unusual Discharge? When to Consider an At-Home STI PCR Test

If you’re experiencing uncomfortable symptoms like itching, burning, or unusual discharge, you are not alone. Many people in the UK face these issues and wonder whether they could indicate a sexually transmitted infection (STI). Let’s explore what your symptoms could mean, the science behind STI testing, and the practical steps you can take—whether or not you purchase a home test.

What Are Common Symptoms of STIs?

• Unusual vaginal or penile discharge
• Burning or stinging when you urinate
• Itching or irritation
• Sores, rashes or unusual lumps
• Pain during sex

Remember, many people with STIs have no symptoms at all. Regular testing is the only way to be sure.

Why Do These Symptoms Occur? The Science Behind STIs

STIs are caused by bacteria, viruses or parasites transmitted primarily through sexual contact. Some, like chlamydia and gonorrhoea, often produce subtle symptoms or none at all. The symptoms happen because your immune system detects an invader and triggers inflammation—your body’s way of fighting infection.

How Does PCR Testing Work?

Polymerase Chain Reaction (PCR) is a highly sensitive laboratory method. It amplifies and detects trace amounts of STI-causing organisms’ DNA or RNA. This science allows your test to accurately identify infections even at early stages.

What Should I Do If I Have These Symptoms?

• Avoid sexual contact until you get your results
• Use condoms to reduce risk of transmission
• Speak to a healthcare professional for advice or visit the NHS A–Z of STIs
• Consider testing regardless of symptoms, as STIs often go unnoticed

How Can I Get Tested Easily?

Mayfield Clinic offers an At-Home STI PCR Test Kit (7-Infection Profile) using a discreet, self-collected urine sample or multisite swab. You can order online and receive results in just two days. Alternatively, book an in-person blood test at our Oxford, London, or Birmingham clinics.

Take Charge Today

Don’t wait for symptoms to worsen. Order your home STI test kit today or book a GP appointment for confidential guidance.