Acetic acid and Lugol's

  • Tuesday, September 16, 2025 9:46 PM
    Reply # 13542935 on 13540849
    Akira Kawahima

    Dear IANS Team,

    Thank you very much for organizing the Virtual Standard HRA Course — it has been an incredibly valuable learning experience.

    I would like to ask a question regarding the use of Lugol’s iodine solution in high-resolution anoscopy (HRA):

    • Does the concentration of Lugol’s iodine vary depending on the institution or practitioner?
    • If so, are there differences in diagnostic effectiveness based on the concentration used?

    I would be grateful if you could share any recommendations, standards, or published guidance regarding the preferred Lugol’s iodine formulation for anal HRA (e.g., 2%, 3%, 5%).

    Thank you for your time and support.

    Warm regards,

    Akira Kawashima

    PhD Program, Kumamoto University, Japan

  • Wednesday, September 10, 2025 12:04 PM
    Reply # 13540851 on 13540849
    Anonymous member (Administrator)

    Not very long - usually 2-3 minutes. I find that it has often faded at least somewhat by the time I have gone around the entire squamo-columnar junction and reached the beginning again.

    Cristina Brickman



  • Wednesday, September 10, 2025 12:02 PM
    Message # 13540849
    Anonymous member (Administrator)

    How long do the changes in colour last with acetic acid and with Lugol's, respectively?

Powered by Wild Apricot Membership Software