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.

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