Evaluation of the Q-Pad hrHPV Test System for Identifying Precancer
Summary
The EQUIP Study is testing whether high-risk human papillomavirus (hrHPV), the virus that causes most cervical cancers, can be accurately detected from menstrual blood collected at home. People who have been referred for colposcopy after an abnormal Pap or hrHPV test will use the Q-Pad Kit during their period to collect menstrual samples on a special menstrual pad and mail them to a central laboratory for hrHPV testing. The same participants will have a standard cervical sample collected for routine hrHPV testing and will undergo colposcopy as part of their usual care. By comparing hrHPV results from menstrual samples with results from cervical samples and biopsy findings, the study will evaluate how well the Q-Pad hrHPV Test System detects cervical precancer and will also assess how easy and acceptable it is for participants to use this at-home collection method.
Detailed description
The EQUIP Study is a prospective, multicenter method-comparison study designed to evaluate the diagnostic performance of the Q-Pad hrHPV Test System for cervical cancer screening. Menstruating adults referred for colposcopy after an abnormal cervical screening result receive a mailed Q-Pad Kit and use it during the menstrual cycle immediately after their clinic visit to collect a menstrual samples at home, guided by written instructions and an optional accompanying smartphone application. These samples are returned by mail to a central laboratory, where hrHPV testing is performed using a PCR assay. At the colposcopy visit, clinicians obtain a standard cervical specimen for routine cytology and hrHPV testing on the same assay platform and perform colposcopy with biopsy as clinically indicated. Each participant therefore provides both an at-home menstrual sample (index test) and a clinician-collected cervical sample (comparator) within the same episode of care, with biopsy and histopathology providing disease status. The study focuses on comparing hrHPV results between the two specimen types and on evaluating safety, specimen adequacy, and participant usability and acceptability of the Q-Pad at-home menstrual collection approach.
Arms & interventions
- DeviceQ-Pad hrHPV Test System
Participants will receive a mailed Q-Pad Kit, which includes two Q-Pads (menstrual pads with removable collection strips called Q-Strips), a Q-Strip Container with desiccant for storing and shipping the strips, and a prepaid return mailer. During the menstrual cycle after their colposcopy visit, participants will follow the Instructions for Use to passively collect menstrual blood with the Q-Pads, then remove the Q-Strips and place them in the Q-Strip Container for mailing to the central laboratory for hrHPV testing. At the colposcopy visit, the clinician will also collect a cervical sample in ThinPrep liquid-based cytology medium for hrHPV testing, which will serve as the comparator specimen.
Outcome measures
Primary
Clinical Performance vs Histology
Clinical sensitivity defined as the proportion of participants with biopsy-confirmed CIN2+ whose menstrual-blood hrHPV result (Q-Pad hrHPV Test System) is positive and Clinical specificity defined as the proportion of participants with \<CIN2 on histology whose menstrual-blood hrHPV result is negative.
Time frame: Through study completion, an average of 1 year.
Proportion of participants with at least one reportable device-related adverse event (ADE or SADE)
Proportion of participants who experience at least one adverse event or device deficiency that is not on the protocol's non-reportable event list.
Time frame: Through study completion, an average of 1 year.
Secondary
Positive, negative, and overall percent agreement between Q-Pad hrHPV testing and clinician-collected cervical hrHPV testing
Time frame: Through study completion, an average of 1 year.
Q-Pad hrHPV Test System validity rate and participant usability/acceptability
Time frame: Through study completion, an average of 1 year.
Eligibility criteria
Study locations (4)
Planned Parenthood of Southern New England
New Haven, Connecticut, 06511
Planned Parenthood North Central States
Minneapolis, Minnesota, 55408
Planned Parenthood of Greater Ohio (PPGOH)
Akron, Ohio, 44302
Planned Parenthood Association of Utah
Salt Lake City, Utah, 84102
References
- Arbyn M, Peeters E, Benoy I, Vanden Broeck D, Bogers J, De Sutter P, Donders G, Tjalma W, Weyers S, Cuschieri K, Poljak M, Bonde J, Cocuzza C, Zhao FH, Van Keer S, Vorsters A. VALHUDES: A protocol for validation of human papillomavirus assays and collection devices for HPV testing on self-samples and urine samples. J Clin Virol. 2018 Oct;107:52-56. doi: 10.1016/j.jcv.2018.08.006. Epub 2018 Aug 22.(PubMed)
- Naseri S, Young S, Cruz G, Blumenthal PD. Screening for High-Risk Human Papillomavirus Using Passive, Self-Collected Menstrual Blood. Obstet Gynecol. 2022 Sep 1;140(3):470-476. doi: 10.1097/AOG.0000000000004904. Epub 2022 Aug 3.(PubMed)
- U.S. Food and Drug Administration, "510(k) Substantial Equivalence Determination Decision Summary: Q-Pad A1c Test System (K231465)," 2023, accessed June 11, 2025, https://www.accessdata.fda.gov/cdrh_docs/pdf23/K231465.pdf.