United Kingdom (Great Britain)
A 21-year-old male asked:

Do serum complement levels naturally fluctuate? had one mildly low c4 with normal c3 but when test redone both had risen & c4 was within normal range

1 doctor answer1 doctor weighed in
Dr. Marsha Davis
Internal Medicine 30 years experience
They do : Fluctuate somewhat but it sounds like yours are normal!
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jan 24, 2017


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.