Abnormal platelet count can have various causes, ranging in severity from 'needs attention' to 'critical'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose abnormal platelet count, we could:
|Lupus (SLE)||4%||Ruled out|
Platelet count (PLT). Unit: x10^3/uL or x10^9/L
Possible responses:→ Don't know
→ Under 100
→ 100 to 149
→ 150 to 450 (normal)
→ Over 450
Hepatitis C may cause or contribute to a secondary ITP.