Renal disease
Case 14: A Patient with General Aches and Nose Bleeds
CASE
A 60‐year‐old man has been feeling unwell for the last month with general aches and pains and nose bleeds. Blood tests have revealed renal impairment with a creatinine of 330 µmol/L; his urine dipstick shows a blood of +++ and protein of +++.
QUESTION 1
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What blood test would point towards a diagnosis of Wegener's granulomatosis?