1. Factors influencing the PABA excretion were discussed.

2. OBJECTIVE To establish a method for quantitative analysis of procaine hydrochloride and its decomposed product p -aminobenzoic acid(PABA) simultaneously.

3. Do not take with sulfonamide since PABA interferes with the activity of the drug.

4. The distribution of PABA acetylator phenotype in 64 healthy Chinese students wasreported.

5. Hair- includes PABA (para-aminobenzoic acid) and pantothenic acid for the maintenance of natural hair colour.

6. It is ascertained that the PABA may be N - dimethylated using dimethyl sulfate as a methylation agent.

7. Conclusion The method is convenient, rapid and accurate, which may be used to assay PABA in procaine hydrochloride injection.

8. In 100 patients with gallstone, blood glucose, insulin were measured and BT - PABA test, Amino acid consumption test were made.