{{Rsnum
|rsid=3745567
|Gene=C3
|Chromosome=19
|position=6690760
|Orientation=minus
|GMAF=0.0932
|Gene_s=C3
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 1.8 | 20.5 | 77.7
| HCB | 0.0 | 11.0 | 89.0
| JPT | 0.0 | 13.4 | 86.6
| YRI | 0.7 | 12.9 | 86.4
| ASW | 0.0 | 3.5 | 96.5
| CHB | 0.0 | 11.0 | 89.0
| CHD | 0.0 | 17.4 | 82.6
| GIH | 1.0 | 12.9 | 86.1
| LWK | 0.0 | 11.8 | 88.2
| MEX | 0.0 | 15.5 | 84.5
| MKK | 1.9 | 14.1 | 84.0
| TSI | 2.0 | 20.6 | 77.5
| HapMapRevision=28
}}{{PMID Auto GWAS
  |PMID=23028341
  |Trait=Complement C3 and C4 levels
  |Title=Genome-wide association study for serum complement C3 and C4 levels in healthy Chinese subjects.
  |RiskAllele=T
  |Pval=2E-9
  |OR=.09
  |ORtxt=[0.070-0.110] g/L increase
  |OA=1
}}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | FTDNA2}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}