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Complement C4

Other

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 by source

Published adult intervals: 3, from 3 named sources, shown in mg/dL.

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)

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

0–1y

7 – 30 mg/dL

C

CALIPER: Canadian Pediatric Reference Intervals

All

1y–19y

13 – 37 mg/dL

C

CALIPER: Canadian Pediatric Reference Intervals

All · 0–1y

7 – 30 mg/dL

C

CALIPER: Canadian Pediatric Reference Intervals

All · 1y–19y

13 – 37 mg/dL

Related biomarkers

More tests in the other category.

Prostate Specific Antigen (PSA)

Sources

ARUP Laboratories

Mayo Clinic Laboratories

CALIPER: Canadian Pediatric Reference Intervals

Last updated 2026-05-02

This page presents source-specific reference data and sourced explanations. For general wellness information only. This is not medical advice. For diagnosis or treatment of any condition, talk to a qualified clinician.

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