For Leukocyte counts, EDTA and heparin can be used as anticoagulant. True or False?

### False (EDTA only, heparin is unsatisfactory)

## Step1: Understanding Leukocyte Counts### Leukocyte counts measure the number of white blood cells in the blood.## Step2: Role of Anticoagulants### Anticoagulants prevent blood from clotting, which is crucial for accurate leukocyte counting.## Step3: EDTA's Effectiveness### EDTA (ethylenediaminetetraacetic acid) is a commonly used anticoagulant for leukocyte counts due to its effectiveness in preventing clotting.## Step4: Heparin's Effectiveness### Heparin is not satisfactory for leukocyte counts as it can cause partial thromboplastin time (PTT) alterations, which can interfere with the results.