Complement CH50
Immunology
Sample and container requirements
Plain serum
Minimum volume required
4 ml Blood
Special requirements
Patient preparation
None
Sample viability
To be stored at -70oC or below.
Turnaround time
up to 4 weeks
Reference range
Normal range 42 -95U/mL, Low 30 -42 U/mL Absent <30 U/mL.
Clinical guidance
Some indications: Hereditary complement deficiencies recurrent meningitis, familial SLE https://labtestsonline.org.uk/tests/complement
Notes
Images to go here
This information was last updated on 19 August 2026