A nurse is reinforcing teaching to the parent of a 7-year-old child who has manifestations consistent with attention deficit hyperactivity disorder (ADHD). Which of the following statements should the nurse make regarding the screening and diagnosis of ADHD?

“Since ADHD is genetic, we need to know if other family members have been diagnosed to determine if your child has it."

"Your child will need a comprehensive evaluation, based on specific criteria including a detailed history and behavior assessment."

If your child shows symptoms of ADHD at home but not at school they can still be diagnosed with ADHD."

"ADHD can be confirmed with a blood test, so we should schedule one for your child."