Stability of delta-aminolevulinic acid and porphobilinogen in urine under varying conditions.
D000596:Amino Acids; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007982:Levulinic Acids / Q000652:urine*; D011166:Porphyrins / Q000652:urine*; D011758:Pyrroles / Q000652:urine*; D013696:Temperature; D013997:Time Factors
D000596:Amino Acids; D007982:Levulinic Acids; D011166:Porphyrins; D011758:Pyrroles