#AskDrKK: How to calculate platelet counts from peripheral smear?

#DrKKAnswers:
A: There are two methods: Platelet count per uL =
1. Average number of platelets per oil immersion field multiplied by 20,000.
2. Average number of platelets per oil immersion field multiplied by Hb (g/dL) and then multiplied by 1,000.