Request a test

To request this test please send sample with a request providing patient ID (three identifiers), specimen information, assay required, relevant clinical details and sender information. Before sending sample please read details on requesting and labelling by clicking on the link. Please also refer to any additional information provided for this test. Download the referral form >

Sending address

Chemical Pathology Reception
Level 1, Camelia Botnar Building
Great Ormond Street Hospital
Great Ormond Street

Laboratory service

Chemical Pathology

Sample requirements

minimum 3 ml Lithium Heparin whole blood for red cell assay, can also be done on frozen liver

Reference range

see report or contact laboratory

Turnaround time

60 days

Disease / group

urea cycle disorders


Upon request

Call in advance?

Not required

Chemical Pathology

The Chemical Pathology Laboratory provides an extensive range of services covering both routine biochemistry and specialised analysis and interpretation.

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