Cytokeratin 19 fragment is high at 6.87, suggesting that you may be suffering from some disease of the lungs.
Cytokeratin 19 fragment mainly reflects one of the markers for squamous lung cancer and non-small cell lung cancer. The normal value should be less than 2.0 μg/L with a sensitivity of 60% and a specificity of 95%.
Therefore, when this indicator is 6.87 high, it is necessary to be alert to the presence of lung cancer. However, an elevation does not necessarily confirm the diagnosis of lung cancer, but only suggests that it is important to rule out the possibility of lung cancer in a timely manner. Enhanced CT examination of the lungs is recommended, which can observe whether there are space-occupying lesions in the lungs. If there is, then further pathologic puncture biopsy should be done to confirm the diagnosis.
The diagnosis should be made by combining the characteristics of medical history and other examination results, and it is recommended to clarify the cause of the disease under the guidance of a doctor.