Understanding a Positive HPV Aptima Test Result
A positive HPV Aptima test indicates active expression of E6/E7 oncogenes from high-risk HPV types, signaling that the virus is not just present but actively producing proteins that can drive cellular transformation toward cervical cancer. This is fundamentally different from DNA-based tests that only detect viral presence.
What the Aptima Test Detects
The Aptima HPV Assay detects mRNA (not DNA) from E6/E7 oncogenes of 14 high-risk HPV types (16,18,31,33,35,39,45,51,52,56,58,59,66, and 68) 1, 2. This represents active viral gene expression rather than mere viral presence, which explains why:
- Aptima is more specific than DNA tests like Hybrid Capture 2, meaning fewer false positives from transient infections that will spontaneously clear 2, 3, 4
- Aptima maintains equivalent sensitivity (96-97%) for detecting high-grade cervical lesions (CIN 2+) compared to DNA tests 1, 2, 3
- The positive predictive value is significantly higher (25% vs 16% for Cobas DNA testing) for actual high-grade disease 4
Clinical Significance: What This Means for Your Patient
A positive Aptima result does NOT mean cervical cancer exists, but it does indicate higher risk for developing precancerous changes that require monitoring. 5
Key counseling points based on CDC guidelines:
- HPV is extremely common - most sexually active persons acquire HPV at some point, even with only one lifetime partner 5
- The infection is usually asymptomatic and often clears spontaneously through immune response 5
- HPV can remain dormant for years before detection, so timing of acquisition cannot be determined and does not imply recent infidelity 5
- A positive HPV test with normal Pap smear means no cellular abnormalities are currently visible, but the patient has higher likelihood of developing changes over time that require monitoring 5
Required Follow-Up Actions
The management depends entirely on the concurrent cytology result and patient age:
If Cytology is Normal (Age ≥30):
- Repeat co-testing (cytology + HPV) in 1 year 6
- If HPV remains positive at 12 months OR cytology becomes abnormal, refer to colposcopy 6
- If both negative at 1 year, return to routine screening 6
If Cytology Shows ASC-US, ASC-H, or LSIL:
- Immediate colposcopy referral regardless of HPV status 5
- These cytologic abnormalities combined with positive high-risk HPV warrant direct visualization 5
If Cytology Shows HSIL:
- Immediate colposcopy with directed biopsy - this is non-negotiable 5
Critical Pitfalls to Avoid
Do not dismiss a positive Aptima result even if cytology is normal - the mRNA detection indicates active oncogenic activity that warrants closer surveillance than routine screening intervals 2, 4. The higher specificity of Aptima compared to DNA tests means this positive result is less likely to represent a transient infection that will spontaneously clear 3, 4.
Do not use HPV testing (including Aptima) in women under age 30 for primary screening, as transient HPV infections are extremely common in this age group and lead to unnecessary interventions 5, 7. The exception is for triage of abnormal cytology 5.
Emphasize the importance of follow-up - patients must understand that missing follow-up appointments could allow progression of undetected precancerous lesions 5.
Partner Counseling Considerations
Partner notification is not clinically indicated as there is no validated HPV test for men, and partners in long-term relationships typically share HPV 5. However, some patients may benefit from informed discussion with partners to:
- Foster support for necessary follow-up 5
- Make informed decisions about condom use, which may reduce transmission risk 5
- Reduce anxiety by understanding HPV's ubiquitous nature 5
Why Aptima May Be Superior for Risk Stratification
The detection of E6/E7 mRNA expression (rather than just viral DNA) correlates with viral integration into the host genome, which is a critical step in malignant transformation 4. This explains the significantly higher specificity (41% vs 13%) and overall accuracy (50% vs 26%) compared to DNA-based Cobas testing for detecting actual high-grade lesions 4. This means fewer unnecessary colposcopies while maintaining excellent sensitivity for clinically significant disease 2, 3, 4.