Stability of δ-Aminolevulinic Acid and Porphobilinogen in Urine Under Varying Conditions
- 1 July 1968
- journal article
- Published by Oxford University Press (OUP) in Clinical Chemistry
- Vol. 14 (7) , 610-614
- https://doi.org/10.1093/clinchem/14.7.610
Abstract
A study was made on the stability of δ-aminolevulinic acid and porphobilinogen in urine. Data are presented showing that both substances can be preserved in the same sample by adjusting the pH to 6-7 and storing at -20° for periods up to 1 month, or at 4° for periods up to 2 weeks. As previously shown (1), these conditions are also satisfactory for preservation of coproporphyrin.Keywords
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