<s>[INST] I have a stress test tomorrow at 8:00 a.m. and had coffee at 5:00 p.m.  Should I reschedule my appt?  The first procedure is CD/ED/794.31/LXA and the next procedure is ED/CD/794.31/LXA.  I am 50 yrs old, 5 ft. tall, weigh 128 and have a family history of heart problems. [/INST] Thanks for your question on Healthcare Magic. I can understand your concern. No need to worry for coffee intake. You had taken it before 15 hours of test. So it will metabolize in the body and excreted into urine and stool. So it won't cause any effect of your stress test report. So don't post phone or reschedule your stress test date. Don't worry, you will be do great I'm stress test. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>