N.M. Stat. § 60-1A-14

A. The commission shall adopt rules applying to the handling of pre- and post-race, out-of-competition and necropsy testing of blood serum plasma, urine or other appropriate test samples identified by the commission to be taken from racehorses, following guidelines that meet or exceed the standards established in model rules published by the association of racing commissioners international, incorporated, or a successor organization or, if none, by another nationally recognized organization that has published substantially similar guidelines that are generally accepted in the horse racing industry as determined by the commission.

B. Each specimen taken from a racehorse shall be divided into two or more samples, and:

(1) one sample, designated as the “official sample”, shall be tested by the commission or its designated laboratory in order to detect the presence of unauthorized drugs, chemicals, stimulants, depressants or other prohibited substances as defined in guidelines published by the association of racing commissioners international, incorporated, or a successor organization or, if none, by another nationally recognized organization that has published substantially similar guidelines that are generally accepted in the horse racing industry as determined by the commission; and

(2) the remaining samples, each designated as a “split sample”, may be forwarded by the commission to the scientific laboratory division of the department of health or maintained by the commission in a manner that meets or exceeds the guidelines identified in Paragraph (1) of this subsection.

C. After a positive test result on the official sample tested by the commission or its designated laboratory and upon a written request from the president, executive director or manager of the New Mexico horsemen's association on forms designated by the commission, a corresponding split sample shall be transferred to an independent laboratory in a manner prescribed by commission rule.

D. All samples shall be kept in a controlled environment for a period of time specified by the commission in each case.

E. The commission shall contract with an independent laboratory to maintain a quality assurance program. The laboratory shall meet or exceed the current national laboratory standards for the testing of drugs or other foreign substances in a horse, as established by the association of racing commissioners international, incorporated, or of a successor organization or, if none, of another nationally recognized organization that has published substantially similar guidelines that are generally accepted in the horse racing industry.