Objective: To investigate the necessity of urinary sediment examination in those that had been analyzed by dry-chemistry method. Methods: 1265 urinary specimens were analyzed respectively by dry-chemistry method and standard urinary sediment examination. Results: Of 506 urinary specimens which were negative examined by dry-chemistry method

62 specimens were found positive by urinary sediment examination. The false negative rate was 12.25% (the false negative rate for WBC was 3.75%; for RBC

5.73%; for pathologic casts

2.77% ). Of 759 urinary specimens which were positive analyzed by dry-chemistry method

243 specimens were found negative by urinary sediment examination. The false positive rate was 32.02%. Conclusion:It is necessary to examine urinary sediment even after the specimen was analyzed by dry-chemistry method. The two analysis methods of urinary specimen could be complementary to each other. However they could not replace each other.