Why Get Tested
You should get this test done if you have symptoms of a possible heart failure like shortness of breath, extreme fatigue, coughing with a wheezing sound, difficulty while sleeping, swelling around the ankle and sometimes chest pain. In these cases a doctor recommends a BNP test to assess the condition of the heart and to figure out whether medication or hospitalization is required.
No special preparation required
If the levels of the BNP proteins are on the higher side then it means that the condition of the heart is poor.