Patient preparation:
The patient does not need to be fasting.
The test material is blood.

Significance of the test:
Kaolin-cephalin time is a sensitive review test used to assess coagulation.
Significance of the test: differential diagnosis of hemorrhagic diathesis, control of heparin treatment, control of hemophilia A and B replacement therapy, preoperative screening for coagulopathy.
Time prolongation: deficiency of single clotting factors, coagulopathy from wear and tear, heparin/hirudin treatment, acquired lupus anticoagulant.
Time shortening: may be an expression of hypercoagulability.

Preparation and preparation of material:
The test material is blood drawn on sodium citrate exactly to the line marked on the tube label ! ! !
Plasma in the refrigerator 8 hours, at room temperature up to 4 hours.