Complement total hemolytic CH50
A complement blood test measures the levels and/or activity of a group of proteins that are part of the complement system. The normal range is 110–190 units/mL for adults, as American Board of Internal Medicine (Laboratory Test Reference Ranges) publishes it. Labs differ by up to 29%.
This system "complements" or enhances your body's defenses against infections and other diseases. Your immune system makes antibodies, which are proteins to fight disease-causing substances like viruses and bacteria.
Source: MedlinePlus, U.S. National Library of MedicineNormal range
3 published ranges, each from a named source- Normal
- 110–190 units/mL
- Normal
- 30–89.9 U/mL (varies by lab)ARUP 38.7–89.9 · Mayo 30–75 U/mL
These labs do not agree: the published adult ranges differ by up to 29%, so the same result can read as normal at one lab and be flagged at another — ARUP 38.7–89.9 · Mayo 30–75 U/mL. Both are real published values, shown as each lab states them.
Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges), Mayo Clinic Laboratories (Pediatric Test Catalog).All source ranges (3)
by lab, sex and age, as published ·
| Source | Sex | Age | Range |
|---|---|---|---|
| American Board of Internal Medicine (Laboratory Test Reference Ranges) | All | all ages | 110–190 units/mL |
| ARUP Laboratories Test Directory | All | all ages | 38.7–89.9 U/mL |
| Mayo Clinic Laboratories (Pediatric Test Catalog) | All | all ages | 30–75 U/mL |
What a high or low result can mean
LOINC2HPOThis is reference information, not a diagnosis: only a clinician can interpret your result in context.
- Sample
- Serum or plasma · LOINC
- Listed under
- Autoimmune Diseases · Lupus · Rheumatoid Arthritis
- Code
- LOINC 4532-8 · units/mL
- Also called
- Total Hem Comp