Fetal thrombocytopenia

Dr Daniel J Bell and Radswiki et al.

Fetal thrombocytopenia refers to an abnormally low platelet count in the fetus. The acceptable normal range for a fetal platelet count is similar to adults and do not vary significantly with gestation age. The lower limit for cut off is therefore usually taken as:

  • 150,000/uL for thrombocytopenia and
  • 50,000/uL for severe thrombocytopenia

Recognized associations include:

It is most often caused by maternal alloantibodies against fetal platelets crossing the placenta and resulting in platelet destruction. This condition, known as fetal and neonatal alloimmune thrombocytopenia (FNAIT) is considered a platelet equivalent of Rh isoimmunisation 5.

Other causes include:

Article information

rID: 15164
Tag: cases, cases
Synonyms or Alternate Spellings:
  • Fetal thrombocytopenia
  • Foetal thrombocytopenia

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.