What Does Low Platelet Count Mean?

Low platelets (thrombocytopenia) means reduced clotting ability and increased bleeding risk.

Severity

  • 100,000–150,000: mild
  • 50,000–100,000: moderate
  • Below 50,000: bleeding risk
  • Below 20,000: spontaneous bleeding

Common Causes

  • Immune thrombocytopenia (ITP)
  • Medications (heparin, certain antibiotics)
  • Liver disease with enlarged spleen
  • Alcohol use
  • Viral infection
  • Pregnancy (gestational)

Symptoms

  • Easy bruising
  • Petechiae (small red dots on skin)
  • Nosebleeds
  • Prolonged bleeding from cuts
  • Blood in urine or stool
Source: NLM MedlinePlus, American Association for Clinical Chemistry.

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