Assay

C1  Functional esterase inhibitor 

Key Words

C1 Functional esterase inhibitor , C1FA

Specimen Collection

Serum (brown)

The sample must be separated and frozen within 60 mins to prevent falsely low function results.

Please contact the Immunology laboratory (01733 678454) to make us aware that you are sending a sample for this test. (Monday to Friday ONLY)

Turnaround time

21 days

This test is referred to another centre:                                                                                                                             Department of Clinical Chemistry and Immunology                                                                                                                   Level 4
Addenbrookes Hospital NHS Trust
Hills Road
Cambridge CB2 2QQ
Tel: 01223 217215
Fax: 01223 217794

Test indications

This assay is used for the confirmation of the diagnosis of C1 inhibitor deficiency in patients with angioedema (especially where the C4 level is reduced and the immunochemical levels of C1esterase inhibitor are equivocal)

Methodology

Contact referral centre

Interferences

Contact referral centre

Reference Range

46 – 130%

Analytical error

Contact referral centre

Reference change value

N/A