Test investigation


Laboratory offering test

Referral laboratory

Also known as/Frequency of test

CH100, AP100, Haemolytic Complement Activity – Classical and Alternative Pathways, Functional Complement Activity


Measures the classical and alternate lytic pathways of complement. Consider this assay in patients with recurrent bacterial infections, especially meningococcal (C5-9, properdin) and pneumococcal infection (C1-4), or with increased susceptibility to immune complex diseases such as SLE (C1-4).

Comments precautions

Needs to be in the lab within 1 hour of venipuncture Please discuss with the Immunologist prior to requesting this assay Referred outside of EPA

Sample type


Turnaround times (TAT) Urgent/Routine/GP or OPD

2 weeks