Lab marker · Low

Low Platelet Count: what it means

A Platelet Count result below the normal range is considered low. Here is what a reduced Platelet Count can point to, and when it is worth discussing with a doctor.

Reference range: 150–450 ×10^9/L; <50 bleeding risk, >1000 thrombosis risk

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What a low Platelet Count can mean

  • Immune thrombocytopenia (ITP) — autoimmune destruction.
  • Bone-marrow suppression — chemotherapy, alcohol, B12/folate deficiency, leukaemia, aplastic anaemia.
  • Increased consumption — DIC, sepsis, HUS, TTP.
  • Hypersplenism — sequestration in cirrhosis, lymphoma.
  • Heparin-induced thrombocytopenia — drug-mediated.
  • EDTA pseudothrombocytopenia — laboratory artefact, always confirm with citrate tube.

When to discuss with a doctor

Platelet count <100 × 10⁹/L warrants a primary-care visit and repeat with citrate tube. <50 × 10⁹/L carries spontaneous bleeding risk and needs prompt evaluation. >1000 × 10⁹/L warrants haematology evaluation for myeloproliferative disease. Mediora.AI tracks the platelet trajectory in the context of haemoglobin and WBC.

Conditions this can relate to

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Mediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.