Lugol Sterile Solution
Lugol 2% is a non-toxic stain used in Upper GI chromoendoscopy, primarily for diagnosing Barrett’s oesophagus.
Lugol is a combination of iodine and potassium iodide that forms a compound iodine solution for staining tissue. With the use of a spray catheter Lugol stains the tissue a green-brown colour. A area which remains unstained is lacking glycogen in the epithelium which could indicate dysplasia.
Lugol is quickly absorbed by the tissue and stains the area for a maximum time of 60 minutes. It has been classified as a sterile solution which is suitable for single use only