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Complement C4
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Complement C4
COMMON RANGE
14 – 40
mg/dL
3.7
43.3
M
Mayo Clinic Laboratories
Adult
↗
See all sources ↓
CONVERT & COMPARE
mg/dL
=
0.27
g/L
Reference ranges across 10+ sources
Adult reference ranges from 3 entries across 3 named sources, shown in mg/dL. Compare side-by-side.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
A
ARUP Laboratories
All
≥18y
10 – 40 mg/dL
↗
M
Mayo Clinic Laboratories
All
≥18y
14 – 40 mg/dL
↗
L
Labcorp
All
≥18y
10 – 40 mg/dL
↗
A
ARUP Laboratories
All · ≥18y
↗
10 – 40 mg/dL
M
Mayo Clinic Laboratories
All · ≥18y
↗
14 – 40 mg/dL
L
Labcorp
All · ≥18y
↗
10 – 40 mg/dL
Ages 0–17 (CALIPER)
PEDIATRIC
2 age- and sex-stratified entries from the Canadian Laboratory Initiative on Pediatric Reference Intervals.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
C
CALIPER — Canadian Pediatric Reference Intervals
All
0–15d
7 – 30 mg/dL
↗
C
CALIPER — Canadian Pediatric Reference Intervals
All
1y–19y
13 – 37 mg/dL
↗
C
CALIPER — Canadian Pediatric Reference Intervals
All · 0–15d
↗
7 – 30 mg/dL
C
CALIPER — Canadian Pediatric Reference Intervals
All · 1y–19y
↗
13 – 37 mg/dL
Related biomarkers
Often tested alongside complement c4 or part of the same panel.
Lead (Pb)
Other
Mercury (Hg)
Other
Arsenic (As)
Other
Prostate Specific Antigen (PSA)
Other
CA-125
Other
CA 19-9
Other
Sources
A
ARUP Laboratories
M
Mayo Clinic Laboratories
L
Labcorp
C
CALIPER — Canadian Pediatric Reference Intervals
Last updated 2026-05-02
This page aggregates publicly available reference data and clinical information from Mayo Clinic Laboratories and other sources. For general wellness information only — not medical advice. For diagnosis or treatment of any condition, talk to a qualified clinician.
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