Another trip to ST medical Services

This is the third time within 7 days that I went to the aeromedical center. My 2nd blood test confirm that I have high haemoglobin level(17.7g/dl. normal:11.7-16.6). According to the doctor, the problems associated with it are higher risk of getting stroke, and other heart diseases. This is because the blood is thick and cannot flow well.

From http://www.alexhosp.com.sg/patients_library/bloodcount.asp

Abnormally high haemoglobin concentrations may be seen in people with chronic lung disease, as an adaptation to high altitudes, or because of an abnormal increase in red cell production by the bone marrow

No wonder the doctor ask if I smoke. I am going to be referred to a spercialist. There are many reasons for high haemoglobin level, I just hope mine is not disease related. If so, there goes my flying career.