Aclient brings a cat to the practice for evaluation of a 2-day history of blood-tinged diarrhea. the veterinarian makes a diagnosis and recommends treatment, but the client cites an article on the internet, and the client now believes this cat has a rare disorder. the client refuses to comply with the treatment recommendation, although the veterinarian is certain of the diagnosis, common to this breed of cat, and the best treatment for it. what is the most appropriate course of action for the veterinary team?

A41-year-old man comes to the clinic complaining of a chronic cough over the past 4 months, which has now been accompanied by haemoptysis. he denies smoking or any past medical history. on physical examination, his head and neck examination is normal. his lungs have diffuse bilateral rales. cardiac examination is normal. laboratory findings reveal na 142 meq/l, k 4.2 meq/l, cl 110 meq/l, hco3 24 meq/l, bun (blood urea nitrogen) 39 mg/dl, creatinine 2.9 mg/dl. urinalysis reveals microscopic haematuria and 4+ proteinuria. which of the following serologic blood tests would most confirm the suspected diagnosis? - anti-glomerular basement membrane antibodies- anti-mitochondrial antibodies- anti-neutrophilic antibodies- anti-parietal cell antibodies- anti-smooth muscle antibodies