Purser Wellness approved rule
Unit: mg/dL
Male: 75-175
Female: 75-175
How to read this marker
Use performing-lab range and trend with C4/CH50 and disease activity.
The wider testing context
Autoimmune tests are not interpreted as simple high/low values. Pretest probability, titer, pattern, repeatability, symptoms, and organ findings matter.
Using this reference
This is the approved adult, nonpregnant baseline unless the rule explicitly states otherwise. Keep the performing laboratory’s reference interval separate from this Purser Wellness rule. Match units and review the specimen, method, timing, medicines and relevant clinical context before interpreting a result. These pages do not calculate a personal high/low status or prescribe treatment.
A question to bring to your visit
Which parts of the Complement C3 rule apply to my report’s method, units and collection conditions, and what other findings should we review alongside it?
Approved by Dr. Daniel Purser, MD · PW-LABS-1.0. The source laboratory’s interval remains separate.
Names you may see
Complement C3