Brief Answer:
false positive

Detailed Answer:
Thank you for asking

I read your question and i understand your concern. Morphine shot you had in hospital was likely the cause of this false positive. Many morphine meds and shots come with cocaine in it like bromptons solution and that might have caused the test positive . Apart from it, many benign causes like coca leaf tea, antibiotics like ampicillin etc can cause false positive cocaine. request a repeat test or show them morphine shot history. They will understand.

I hope it helps. take good care of yourself and dont forget to close the discussion please.

Regards
Khan

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