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Hello, this is Dr. David. I am reviewing your question now and will be with you momentarily.
I have had patients who have been urine tox screen negative and I knew they were taking the percocet pills I was prescribing.
some patients you have to get a urine quantitative opiate level instead of urine screening tests which are not as sensitive
also you are getting dialysis which can wash out pain medications out of your system.
I would ask your doctors for a repeat or retest with a more sensitive urine quantitative opiate level which will show you are taking your medications.
do you have any other questions?