Sherri was worried that her son might be using drugs. she had observed him come home in a bad mood and come out of his room in a short time seeming euphoric. a while later, he was drowsy, sat around, and couldn't even concentrate on his favorite television show. the next day he stayed home from school with nausea, diarrhea, and stomach cramps. sherri should be concerned because from these observations it appears her son might have taken ecstasy. lsd. heroin. barbiturates.

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