Related Experiment Video
Updated: May 2, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Ovarian haemorrhage: a rare presentation and diagnostic dilemma in factor XIII deficiency
Abstract:
Factor XIII (FXIII) deficiency is a rare (autosomal recessive) genetic disorder which is associated with delayed bleeding symptoms that occur hour or days after trauma. Spontaneous rupture of visceral organs due to FXIII deficiency is a rare cause of abdominal pain with grave consequences and can be easily confused with other abdominal pathologies because of normal standard coagulation profile in these patients. We report a 15-year-old girl with spontaneous ovarian haemorrhage and splenic haematoma with FXIII deficiency. She had normal coagulation screen along with normal FXIII screen initially on the 5M urea testing which lead to delay in her diagnosis.
Related Concept Videos
Disorders of Hemostasis
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Venous Thrombosis III: Interprofessional Care
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Extrinsic and Intrinsic Pathways of Hemostasis
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
Esophageal Varices-II: Clinical Features and Management
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol...

