What Is Calcium? Answered By A Nutritional Therapist
The analytical process for the oxalate measurement in urine has been previously published . Organic acids have been extracted from a .1-ml aliquot of acidified urine and derivatized with N-methyl-tert-butyldimethylsilyltrifluoroacetamide. Samples were measured by gas chromatography–mass spectrometry. The ions m/z 261.three, 263.three, and 276.three were applied to...