Table 3.

Test Follow-up Errors

Patient	Test(s)	Indication
#1	HIV test, viral hepatitis serologies	Worsening renal function
#2	Pleural fluid cytology	Rule-out malignancy
#3	Stool culture	Rule-out bacterial diarrhea
#4	Thyroid function tests	History of hypothyroidism
#5	Helicobacter pylori titers	Dyspepsia, abdominal pain
#6	ANCA titers, ASO titers	Nephrotic syndrome
#7	Throat culture, cryoglobulins	Skin biopsy showing vasculitis

ANCA, antineutrophil cytoplasmic antibody; ASO, antistreptolysin O antibody.