- Dinitrophenylhydrazine (DNPH)
The DNPH test uses the 2,4-dinitrophenylhydrazine reagent with which alpha-keto acids and a variety of carbonyl compounds will react and form relatively insoluble crystalling hydrazones (a positive reaction).
Fresh random urine
- Store at 4oC. Keep cool during transport.
Unacceptable Specimens: Any sample from a patient who has received a radio opaque dye in previous 24 hours, Arginine Tolerance Test and urine contaminated with stool.
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