(a) When laboratory tests are required for the release of cases or carriers, the tests shall be performed by:

1. (1) The public health laboratory of the Department of Health; or
2. (2) Another laboratory approved by the State Epidemiologist.

(b) A specimen may be sent to a laboratory not so approved, provided that:

1. (1) It is divided; and
2. (2) A portion of the specimen is sent to an approved laboratory.