"Negative" means a test result for an analyte which is not found or falls below the minimum limit of detection for the method employed.
N.H. Admin. Code § Saf-C 6401.19
#8454, INTERIM , eff 11-1-05, EXPIRED: 4-30-06 (See Revision Note at chapter heading for Saf-C 6400)
New. #8620, eff 5-1-06; ss by #9684, eff 3-23-10 (from Saf-C 6401.21 )