Test for Melanuria and Alkaptonuria and MSUD
Ferric Chloride Tube Test
Result: Gray or black ppt
Clinitest
Result: Yellow ppt
2,4-dinitro-phenylhydrazine (DNPH) reaction
Result: Yellow turbidity or ppt
Ammoniacal Silver Nitrate Test
Result: black urine
Urinary Homogentisic Acid Test
Result: observe for darkening of the color (Ascorbic Acid interferes the test)
Sodium Nitroprusside test
Result: red
FeCl3 Test
Result: transient deep blue color in test tube
Sodium Nitroprusside test
Screening test
FeCl3 Test
Screening test for metabolic disorder
Urinary Homogentisic Acid Test
Screening test. add alkali to freshly voided urine
Clinitest
Test for reducing substance
2,4-dinitro-phenylhydrazine (DNPH) reaction
urine screening test most frequently performed for keto acids
Ferric Chloride Tube Test
Oxidation of chromogen
Ammoniacal Silver Nitrate Test
Addition of silver nitrate and ammonium hydroxide to urine
