How long do you hold mark 1 and atnaa at the injection site?

For Mark 1 and ATNAA (Antidote Treatment Nerve Agent Autoinjector), it is generally recommended to hold the autoinjector at the injection site for at least 10 seconds to ensure proper delivery of the medication. This allows the entire dose to be administered effectively into the muscle. Always refer to specific training guidelines or product inserts for the most accurate procedures.