Medically reviewed by Doru Paul, MD A low platelet count—also called thrombocytopenia—means your blood has fewer than 150,000 platelets per microliter. Platelets are cells that help your blood clot.

In gestational thrombocytopenia (GT), your pregnancy causes this decrease. GT is benign, usually symptom-free, and almost always sorts itself out after you give birth. To understand GT ...