You can find more information concerning split specimens in several sections of this part: Sec. 40.3--Definition.Sec. 40.65--Quantity of split specimen.Sec. 40.67--Directly observed test when split specimen is unavailable.Sec. Sec. 40.71-40.73--Collection process for split specimens.Sec. 40.83--Laboratory accessioning of split specimens.Sec. 40.99--Laboratory retention of split specimens.Sec. 40.103--Blind split specimens.Sec. 40.153--MRO notice to employees on tests of split specimen.Sec. Sec. 40.193 and 40.201--MRO actions on insufficient or unavailable
split specimens.Appendix D to Part 40--Report format for split specimen failure to
reconfirm.