Diagnostic Tests
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Urine Tests
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Disease:
Urine finding:
Fabry disease
birefringent lipid globules (“maltese crosses”)
Hartnup disease
massive aminoaciduria
ochronosis
homogentisic acid
carcinoid syndrome
increased 5-hydroxyindoleacetic acid
= the end product of serotonin metabolism (check it in a flusher, check it in a patient with pellagra)