Printer friendly page

Primary Name Factor XII Assay
Synonym Factor XII Functional Assay
Synonym Hageman Factor Assay
Contraction FXII
UAB Procedure Number 2500540
CPT Code 85280
Specimen Collect one (1) blue-stopper tube (3.2% sodium citrate), filled to specified volume. Do not underfill or overfill.

Specimen Management Centrifuge blue-stopper tube within 1 hour of collection, separate plasma and test or quick-freeze at -70°C.
Specimen Accepted Daily including weekends
Test Performed Monday-Friday.
Available Stat? Pathologist's approval required.
Description Congenital factor XII deficiency is present in 1-3 % of individuals and is inherited as an autosomal recessive mutation. Factor XII deficiency accounts for many instances of prolonged activated partial thromboplastin time assays but has no clinical consequence, even in pregnancy or surgery.
Reference Interval 50-150%
Critical Value None
Associated With --

© Copyright by the University of Alabama at Birmingham

Top of Page