Abstract
The results of ammonia determination in urine with an electrode method as well as with a direct method were strongly correlated (r = 0.998), the electrode method yielding somewhat lower values (p < 0.001). The electrode method is simple. It requires 20 ml of urine of a pH not exceeding 7. Correction of the potassium error is necessary, thus a nomogram is presented. The direct method is simple in skilled hands, it requires 1 μl of urine. Presumably it provides the exact urinary ammonia concentration. Calculation of urinary potassium by performing both ammonia methods on urine samples showed a close correlation (r = 0.926) to measured urinary potassium.
Original language | English |
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Pages (from-to) | 273-279 |
Number of pages | 7 |
Journal | Clinica chimica acta |
Volume | 55 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1974 |