If your Pap smear is abnormal, you will likely be invited for a colposcopy to look directly at your cervix. During this exam, a doctor uses a lighted magnifying instrument called a colposcope, which functions like a microscope, to get a closer view.
To highlight any hidden abnormalities, the practitioner will apply a solution of acetic acid (vinegar) or Lugol’s iodine to the cervix. If they see an area of concern, they may take a small tissue sample, or biopsy, to send to the lab for a definitive diagnosis.