Platelet Count

Here we are focusing on the platelet count. The WBC count in this patient is written as 267, which indicates:

• 267 x 10⁹/L
• 267,000/ul
• 267 x 10⁶/ml
• 267 x 10⁶/mm³

The normal range for the platelet count varies between laboratories but is generally 150-450 x 10⁹/L.

Abnormalities in platelet count include:

• Thrombocytopenia(< 150 x 10⁹/L)
• Thrombocytosis (> 450 x 10⁹/L)*

*Some consider 400 as an upper threshold. For a discussion on normal platelet count range, click here.

For an review on thrombocytopenia, see infographic.

For an review on thrombocytosis, see infographic.

For a discussion on platelet clumping, click here.