C3 and systemic lupus erythematosus: Along with a positive urinary sediment, a positive ANA with a very high level of ds-DNA and low C3 and C4 levels confirmed our suspicion of systemic lupus erythematosus.<h4>Discussion and evaluation</h4>Systemic lupus erythematosus presents in a variety of clinical presentations and the spectrum may range from unique to ubiquitous.