TY  - RPRT
TI  - The effect of eliminating interfering substances by solid-phase extraction and sample-pH adjustment in the colorimetric assay of urinary nitrite and nitrate.
AU  - S Ohkawa
AU  - K Ohishi
AU  - T Yoneyama
AU  - A Hishida
AU  - H Kumagai
PY  - 1998
DO  - 10.1006/abio.1998.2627
UR  - https://pubmed.ncbi.nlm.nih.gov/9570856/
ID  - 9570856
ER  -