Four Proficiency Examinations for Clinical Laboratory Personnel were developed in Clinical Chemistry, Microbiology, Hematology, and Blood Banking. Purpose of project was to enable competent military laboratory technicians who lack credentials to demonstrate their job-related skills and knowledge for civilian positions, and also to help civilians trained on the job to advance. The examinations were constructed by laboratory experts and administered to more than 4,000 persons. Normative data have been compiled. Test scores are used by employers to place and promote laboratory workers. Some credentialing agencies are using or considering use of the examinations. Special use of the tests, including evaluating needs for continuing education, are being developed. The examinations have paved the way for development of equivalency examinations for academic credit, and for other proficiency examinations in nearly all allied health fields. Future needs include updating the examinations to meet rapid changes in the field, publicizing future administration of the examinations, and a study to compare job performance with test scores to prove the job-relationship of the examinations under mandates of equal employment opportunity regulations. (Author)