Improved estimation of urinary myoglobulin by counterimmunoelectrophoresis, as compared with the double immunodiffusion technique.

We describe a simple, sensitive, and relatively inexpensive counterimmunoelectrophoretic technique for detection and estimation of myoglobin. The test can be completed within 90 min, compared with 12-48 h required by double immunodiffusion. With the counterimmunoelectrophoretic technique we could detect myoglobin in concentrations of 2-3 mg/liter, while the detection limit by double immunodiffusion was about 9 mg/liter.