Why is the level of serotonin transporter density (SERT density) so important for us to know? I don't think it's worth the risk for us to take an injection of a drug, just to find out if the drug is safe to use. That's the kind of guinea pig I don't want to be.

"Blood will be taken with each acquisition, and the safety and characterization of 123-I mZINT will then be assessed. The procedures to assess safety will include the taking of vital signs, serum chemistries, complete blood count, urinalysis, and electrocardiogram (EKG)."