toluidine blue

(redirected from toluidine blue test)
A toxic metachromatic thiazine dye used to stain ‘thick’ sections for electron microscopy, which may cause haematuria due to haemorrhagic cystitis and methaemoglobulinuria. Toluidine blue should be avoided by patients with glucose-6-phosphate deficiency, given their risk of haemolytic anaemia

toluidine blue

an antiheparin compound, used also as a biological stain. Called also tolonium chloride.

toluidine blue test
a screening test for mucopolysaccharidosis, e.g. Hurler's syndrome; filter paper impregnated with toluidine blue turns blue when moistened with urine containing excessive amounts of chondroitin sulfuric acid.
References in periodicals archive ?
Toluidine blue test for sperm DNA integrity and elaboration of image cytometry algorithm.