antithrombin functional


antithrombin functional

Also known as

AT III, antithrombin III, , anti thrombin, anti-thrombin

Additional information

Fill exactly to the line indicated on the bottle. Sample must arrive within I hour of collection. Capillary samples are unsuitable for coagulation tests. If the test is required as part of a thrombophilia / procoagulant screen, no additional sample is required. A full thrombophilia screen requires 4 x 1.4ml samples. If the patient is on heparin, please indicate this on the request form.

Sending address

Department of Haematology Camelia Botnar Laboratories Great Ormond Street Hospital Great Ormond Street WC1N 3JH

Laboratory service


Sample requirements

1.4ml venous blood, citrate

Reference range

Please click on the link to view reference range

Turnaround time

21 days


Upon request

Call in advance?

Please contact the laboratory when sending urgent samples. Samples sent out of hours and at weekends must be arranged in advance with the Haematology Specialist Registrar.


The Haematology Department provides a wide range of specialist tests with a special interest in the diagnosis and monitoring of coagulation disorders.

© 2011 Great Ormond Street Hospital for Children NHS Trust