Researchers say a menstrual blood test could offer a simple, non-invasive alternative to cervical cancer screening. The test uses a standard sanitary pad fitted with a blood sample strip to detect human papillomavirus, the main cause of cervical cancer. Women can use the test at home, which could help reach those who avoid clinic-based screening.
In a large study in China, researchers compared menstrual blood samples with clinician-collected cervical samples. The study involved more than 3,000 women aged 20 to 54 with regular menstrual cycles. Results were published in BMJ.
The menstrual blood test detected high-grade cervical cell abnormalities with 94.7% sensitivity. This performance matched clinician-collected samples, which showed 92.1% sensitivity. Although specificity was slightly lower, both methods equally ruled out disease after negative results.
Researchers said the findings support menstrual blood testing as a potential replacement for current screening methods. Cancer Research UK welcomed the research but said larger and more diverse trials were needed. Experts stressed that the test remains experimental and may not suit everyone, including menopausal women.
The Eve Appeal said offering multiple screening options could help improve participation and prevent more cases of cervical cancer.
