See also: 85% of hospital admissions for chest pain are NOT heart attack. 1  3. Cough: persistent coughing or wheezing can be a symptom of heart failure. 2  4. Dizziness: heart attacks or heart rhythm abnormalities can cause light-headedness or even loss of consciousness.
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Urine drug test results can be attributed to human error and urine sample contamination. In addition, there are a number of controlled and uncontrolled substances that will cause a false positive result; these are some of the reasons why labs will immediately split your urine drug test specimen into two samples.