Human Papillomavirus (HPV) & Cervical Cancer Screening

Causes & Risk Factors

HPV is transmitted through sexual contact, and persistence of high-risk types is the key factor in cervical cancer development:

•  Sexual contact — the primary route of HPV transmission, including skin-to-skin genital contact, not only penetrative intercourse.

•  Early age at first sexual activity and multiple sexual partners increase cumulative exposure to different HPV types.

•  Persistent infection with high-risk HPV types (rather than a single exposure) is the key factor associated with cervical cancer risk — most HPV infections clear on their own without causing problems.

•  Immunosuppression — including HIV infection — reduces the ability to clear HPV infection and increases risk of persistence.

•  Smoking is a recognized cofactor that increases risk of cervical disease progression in the presence of persistent high-risk HPV infection.

Symptoms & When to Test

HPV infection itself is usually asymptomatic, and early cervical changes caused by HPV typically cause no symptoms either — this is precisely why routine, age-appropriate screening (not symptom-based testing) is the basis for cervical cancer prevention.

•  Most HPV infections cause no symptoms at all

•  Genital warts may occur with certain low-risk HPV types (distinct from the high-risk types associated with cancer)

•  Early cervical cell changes caused by high-risk HPV typically cause no symptoms

•  Abnormal vaginal bleeding (including after intercourse) or unusual discharge can occasionally indicate more advanced cervical changes and should be evaluated

When Should You Consider Testing?

Cervical cancer screening is recommended at defined intervals based on age, according to established guidelines, regardless of symptoms. Any abnormal vaginal bleeding or discharge should be evaluated by a doctor promptly, independent of your routine screening schedule.

Why Tests Are Combined

HPV testing and cervical cytology (Pap test) detect different things — HPV testing identifies the presence of high-risk viral types, while cytology examines cervical cells directly for abnormal changes — and co-testing (both together) has been shown to improve detection compared to either test used alone.

Because most HPV infections clear naturally without causing cervical changes, a positive HPV test alone does not diagnose cervical disease — it identifies women who may benefit from closer surveillance or reflex cytology to assess whether cervical changes are actually present.

Follow-up protocols after an abnormal result (whether HPV-positive, an abnormal Pap result, or both) are based on established screening guidelines that balance early detection against the risk of over-investigating infections that would have cleared on their own.

Tests Available at NPL

Most infectious-disease molecular tests and microbiological investigations do not require fasting. However, some blood tests ordered at the same time may have specific preparation requirements. Please follow the instructions provided by your doctor or NPL.

Home Sample Collection

Cervical sample collection for HPV testing and Pap cytology must be performed by a trained clinician using a speculum examination — this is not a home sample collection service.

This procedure is performed at an NPL collection center or partner clinic by trained female healthcare staff wherever possible, following appropriate privacy and comfort protocols.

Once your sample is collected, it is processed at our accredited laboratory for HPV and/or cytology analysis as ordered by your doctor.

Reports are delivered securely to your treating doctor and to you, with appropriate guidance on follow-up if results require it.

When to See a Doctor

•  Due for age-appropriate cervical cancer screening per established guidelines — discuss timing with your doctor

•  Abnormal vaginal bleeding, including after intercourse

•  Unusual vaginal discharge

•  A prior abnormal HPV or Pap result requiring follow-up

•  Visible genital warts