{{Rsnum
|rsid=344555
|Gene=C3
|Chromosome=19
|position=6679349
|Orientation=minus
|GMAF=0.2365
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Gene_s=C3
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 2.8 | 40.7 | 56.5
| HCB | 6.8 | 45.5 | 47.7
| JPT | 11.1 | 42.2 | 46.7
| YRI | 2.1 | 23.4 | 74.5
| ASW | 0.0 | 16.4 | 83.6
| CHB | 6.8 | 45.5 | 47.7
| CHD | 12.5 | 42.3 | 45.2
| GIH | 3.0 | 20.8 | 76.2
| LWK | 1.0 | 19.0 | 80.0
| MEX | 14.3 | 39.3 | 46.4
| MKK | 4.5 | 34.4 | 61.0
| TSI | 5.9 | 38.2 | 55.9
| HapMapRevision=28
}}
{{PMID Auto
|PMID=19387462
|Title=The heritability and genetics of complement C3 expression in UK SLE families
}}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | FTDNA2}}
{{on chip | FTDNA}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}