The acetic acid test, also known as the acetic acid whitening test, is a test method mainly used for condyloma acuminatum, condyloma acuminatum subclinical manifestations or HPV latent infection in venereal disease clinics. Because acromegaly, acromegaly subclinical manifestations or HPV latent infection in the clinic is not very typical or can not be seen with the naked eye, so through the application of acetic acid after the whitening, may make the lesion obvious and easy to see, the purpose is to acromegaly warts of warts diagnosis and differential diagnosis.

After removing local secretions with a cotton swab, dip it in 5% glacial acetic acid and apply it to the skin lesions and the surrounding normal skin and mucous membranes, and observe it after 2-5 minutes, the skin lesions become white, and the surrounding normal tissues don't change color as positive.