Watson-Schwartz test
A qualitative screening test for diagnosis of acute intermittent porphyria by the addition of Ehrlich’s reagent and saturated sodium acetate to the urine; a pink or red colour indicates the presence of porphobilinogen or urobilinogen; the former indicates porphyria, the latter does not; therefore, positive results require further differential extraction with butanol and chloroform to eliminate false-positive results due to urobilinogen.
Dictionary > Watson-schwartz test
You will also like...

The Human Nervous System
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

Movement of Molecules Across Cell Membranes
Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..

Origins of Life on Earth
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

Protein Variety
The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..

Polyploidy
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

Dominance
This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be pre..