Table 1 Results of laboratory investigations of Case 1

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Urea: 4.9 mmol/L

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Creatinine: 52 umol/L

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Haemoglobin: 152 g/L

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HbA1c: 35 mmol/mol

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Serum total protein: 69 g/L

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Albumin: 41 g/L

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Urine microalbumin: 239.1 mg/L

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24-hours urine protein: 0.32 g/24 hours (0.10 g/L) from left kidney and 0.46 g/24 hours (0.19 g/L) from right kidney.

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Urine electrophoresis: No monoclonal bands were detected.

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Serum Glomerular Basement Membrane antibody screen: Negative

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Serum Neutrophil Cytoplasmic Antibody screen by florescence: Positive p-ANCA not MPO. The significance of this antibody is unknown.

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Serum Anti-Proteinase (c-ANCA): Negative

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Serum Anti-Myeloperoxidase (p-ANCA): Negative