(a) A designated county agency shall initiate an investigation and file a petition for issuance of an emergency protective services order within 24 hours after the endangered adult has been taken into temporary emergency protective custody.
(b) (1) The court shall hold a preliminary hearing no later than the first court day commencing after a period of 48 hours after the endangered adult has been taken into temporary emergency custody to establish probable cause for grounds for protective custody.
(2) The court shall render its decision on the petition no later than the first court day following a period of 72 hours after the endangered adult has been taken into protective custody.