Improving the Specificity of the Nitrosonaphthol Procedure for Urinary 5-Hydroxyindoleacetic Acid

[摘要] The nitrosonaphthol procedure for urinary 5-HIAA has been modified by using an excess of NaCl and adjusting the urine to a constant pH during the first chloroform purification step. Thus, the variable salt concentration of different urine samples, which has been claimed to be responsible for the reported inconsistency of the method, has been eliminated.

[学科分类] 过敏症与临床免疫学