If Child Protective Services has contacted your family, one of the first questions on your mind is probably how long the investigation will last. In California, CPS agencies generally have 30 calendar days to complete a child abuse or neglect investigation from the date of initial face-to-face contact.
California law places no time restrictions on CPS home visits. Under Welfare and Institutions Codes, Child Protective Services must maintain emergency response capabilities 24 hours a day, seven days a week, giving social workers legal authority to arrive at any hour. However, Fourth Amendment protections still apply, meaning CPS cannot force entry without your consent, a warrant, or genuine emergency circumstances involving imminent danger.
The short answer is no, not without your child’s consent and a court order. Under California law, Child Protective Services cannot force a drug test on your child during an investigation without judicial authorization. Los Angeles County DCFS policy explicitly states that drug testing of youth in foster care is voluntary, and minors must consent before any testing occurs.