Two methods for measurement microalbuminuria are appraised to take the place of RIA. One is immunonephelemetry, using a "closed" immunochemistry analyzer of modest price. The other one is immunoturbidimetry on an "open" centrifugal analyzer, which is of a middle price. The results which are obtained by IN and IT are compared statistically to the RIA. These methods give satisfaction for practicability, precision and accuracy and can be used in any biological laboratory.