Perforin expression (HLH profile)


Perforin expression (HLH profile)

Request a test

When requesting this test please use the referral form provided. Please also refer to any additional information provided for this test. Download the referral form >

Additional information

A control sample is required

Sending address

Immunology Department
Level 4, Camelia Botnar Laboratories
Great Ormond Street Hospital
Great Ormond Street

Laboratory service


Sample requirements

3 mls EDTA

Reference range

Reported as Abnormal Expression if intensity does not reach 3 logs and <50% of cells express perofrin

Turnaround time

8 days

Disease / group

Familial Haemophagocytic Lymphohistiocytosis (HLH), FHL2


Upon request

Call in advance?

Please call in advance to ensure appropriate testing is performed.


The Clinical Immunology Laboratory at GOSH provides a dedicated paediatric immunology service, supported by an expert scientific and clinical team.

© 2011 Great Ormond Street Hospital for Children NHS Trust