🌿Herpes Simplex Virus (HSV) Test (Type I & II)
A blood test to detect antibodies for herpes simplex virus types 1 and 2, which cause oral and genital herpes infections.

🔍 What is it?

Herpes simplex virus type 1 (HSV-1) commonly causes cold sores around the mouth, while type 2 (HSV-2) is primarily responsible for genital herpes. Both types can cause lifelong infections with periodic outbreaks.

This test detects antibodies in the blood indicating past or current infection with HSV-1 and/or HSV-2.

🧪 What does it measure?

• HSV-1 and HSV-2 specific antibodies (IgG)
• Indicates exposure or infection even if no symptoms are present
• Does not differentiate between active and inactive infection

🔎 Note:

• Antibodies can take several weeks after exposure to develop
• A positive result means past or current infection, not necessarily active disease
• Swab tests from sores are used to diagnose active outbreaks

❓ Why might I need it?

You may be advised to test if you experience:

• 😣 Recurrent painful blisters or sores around the mouth or genitals
• 🔍 Unexplained symptoms suggestive of herpes infection
• 💑 You have a sexual partner diagnosed with herpes
• 🤰 Pregnant women to assess risk of transmission to baby
• 🔄 Routine STI screening in high-risk individuals

🧬 Conditions it can help detect:

• Oral herpes (cold sores) – HSV-1
• Genital herpes – HSV-2
• Asymptomatic HSV infection

🩺 How is it done?

• Blood sample is taken from a vein to detect antibodies
• Swab test of lesions may be used to confirm active infection
• ⏳ Blood test results typically available within 2–5 working days

💷 Typical Private Cost in the UK:
£40–£90 depending on provider and test method

✅ Commonly Combined With:

• Other STI tests (HIV, syphilis, chlamydia, gonorrhoea)
• Full sexual health screening

📚 References:

• NHS – Herpes Simplex Virus information
• BASHH Guidelines – Herpes management
• CDC – Herpes Testing and Diagnosis