The American Board of Bioanalysis

http://www.aab.org/abb%20about.htm

About The American Board of Bioanalysis (ABB)

The American Board of Bioanalysis (ABB) evaluates, through the certification process, individuals who wish to enter, continue or advance in the clinical laboratory profession. ABB identifies, on a non discriminatory basis, individuals who meet ABB’s requirements for clinical laboratory directors, consultants, and supervisors. ABB certification is based on an individual’s education, experience, and knowledge of the laboratory field in which certification is granted.

http://www.aab.org/bcld.htm

Certification Standards for Bioanalyst Clinical Laboratory Director (BCLD)

To be eligible for certification as a Bioanalyst Clinical Laboratory Director (BCLD), an applicant must fulfill the following requirements:

An earned doctoral degree* from an accredited institution (see rule 10 under General Regulations) with a chemical, physical or biological science as the major subject and have successfully completed 32 semester hours (minimum) in chemistry or the biological sciences acceptable to the Board.
AND
Have four years of documented pertinent experience on human specimens in an acceptable clinical laboratory gained at the minimum level of medical technologist. This experience must include:
a. A minimum of two years of experience on human specimens directing or supervising high complexity testing;
AND
b. A minimum of four years of experience on human specimens in at least three of the following clinical laboratory disciplines: Chemistry, Microbiology, Hematology or Diagnostic Immunology. This experience may be obtained concurrently;
AND
Pass an ABB examination in General Knowledge and in at least three of the clinical laboratory disciplines mentioned in 2.b. above.

Biologists could be Directors of Clinical Laboratories in USA.