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Background of Clinical Indications
In patients with interstitial pneumonia, the serum concentration of sialylated carbohydrate antigen KL-6 is significantly higher than that of healthy people and patients with other respiratory diseases, and is generally considered to have high clinical diagnostic value. In addition, in active cases of interstitial pneumonia, the serum concentration of KL-6 is significantly higher than that of inactive cases, so it can be used for disease activity assessment (severity assessment, prognostic observation). In addition, it is also effective in diagnosing the risk of drug-induced interstitial pneumonia caused by immune checkpoint inhibitors.