I-693 medical exam and drug testing

What do you guys know about this topic? Would any drugs show up on the blood and urine tests they do for immigration medical exam show any past drug use? Asking for a friend :)

submitted by /u/Cheap_Yam6540
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source https://www.reddit.com/r/immigration/comments/nsd9b4/i693_medical_exam_and_drug_testing/