Screening for albuminuria: a case for estimation of albumin in urine.

The usefulness of bromcresol green for estimating albumin in urine was evaluated by comparison with the Laurell "rocket" technique. In contrast to the bromcresol green method applied for urinary albumin, rather doubtful results were obtained with conventional (Microzone) electrophoresis for albumin and with precipitation techniques for total protein estimation. Albumin estimation with bromcresol green is recommended as a more reliable substitute for total-protein estimations in urine. Limitations of bromcresol green are also pointed out.