Chain of Custody requested on Allina Health specimens; may be sent without, but document that the request was not obtained.
Sample is considered chain of custody if it is sealed with a security seal across the top.
Sterile urine container with security seal in place
Ambient (preferred) - 72 hours
Refrigerated – 7 days
Frozen – 1 year
Gas Chromatography with Mass Spectrometry (GC/MS)