A 26-year-old woman has malar rash, arthritis and foamy urine. Creatinine is 145 micromol/L, urine protein:creatinine ratio is 180 mg/mmol and urine

Question

A 26-year-old woman has malar rash, arthritis and foamy urine. Creatinine is 145 micromol/L, urine protein:creatinine ratio is 180 mg/mmol and urine microscopy shows red cell casts. Complement C3 is low and anti-dsDNA is high. What is the most appropriate investigation?

Accepted Answer

Renal biopsy

Answer

CT pulmonary angiography

Answer

Skin biopsy from malar rash

Answer

Serum urate

Answer

Schirmer test

Lupus nephritis — RACP Written MCQ

A 26-year-old woman has malar rash, arthritis and foamy urine. Creatinine is 145 micromol/L, urine protein:creatinine ratio is 180 mg/mmol and urine microscopy shows red cell casts. Complement C3 is low and anti-dsDNA is high. What is the most appropriate investigation?