Had A GCMS TEST / I WEAR A FENTANTL PATCH

Had a GCMS TEST / I WEAR A FENTANTL PATCH PRESCRIBED MY PAIN MANAGEMENT DR. // DAY I TOOK GCMS TEST I CHANGED PATCH B4 GOING TO DRS APPT on schedule BUT IN RUSH TO GET THERE LEFT OLD PATCH ON....TOTALLY FORGOT....TOOK TEST/ WHEN I REALIZED I HAD OLD ONE ON I TOOK IT OFF IMMEDIATELY...WILL TEST B OK?