Measures leucocyte alkaline phosphatase (LAP) score in your blood. An enzyme score in neutrophils.
Helps distinguish chronic myeloid leukaemia (low score) from reactive increases in white cells (high score).
Tiredness, weakness, pale skin, fever, frequent infections, easy bruising or bleeding; routine health check-ups.
No fasting needed.
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.
Read our Editorial Policy and Medical Review Process.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Blood sample taken from a vein in your arm.
Usually within 6–7 days after the sample reaches the lab. You will receive the report online.
