Description
anti-Xa assay for monitoring low molecular heparin
Also known as
anti Xa assay
Additional information
Fill exactly to the line indicated on the bottle. Sample must arrive within I hour of collection. 0.5ml neonatal coagulation bottles are unsuitable for this test. If the sample is not taken by a peripheral route, it is essential to avoid heparin contamination. Capillary samples are unsuitable for coagulation tests. Samples must be taken 4-6 hours post last dose of low molecular weight heparin. External requests must use the Great Ormond Street anti-Xa (low molecular weight heparin) request form.
Sending address
Department of Haematology
Camelia Botnar Laboratories
Great Ormond Street Hospital
Great Ormond Street
WC1N 3JH
Laboratory service
Haematology
Sample requirements
1.4ml venous blood, citrate (0.5ml neonatal coagulation bottles are unsuitable for this test)
Turnaround time
12 hours
Cost
Upon request
Call in advance?
Please contact the laboratory when sending urgent samples.