A Pap smear can't detect STDs. To test for diseases like chlamydia or gonorrhea, your healthcare provider takes a sample of fluid from the cervix. Fluid isn't the same as cervical cells. Blood tests can also identify certain STDs.

Can a Pap smear show if you have an STD?

No. Pap tests, also known as Pap smears, look for any cell changes in your cervix, which could lead to cervical cancer. Cell changes are often caused by human papillomavirus (HPV), which is an STD. But Pap tests only test for the cell changes, not whether or not you have HPV.

Can a gynecologist tell if you have an STD just by looking?

Most patients are surprised to find that their gynecologist can't recognize every single STD on sight alone.