Cardiologist Indore

  Fasting Before Blood Test: Why It’s Outdated for Most Patients For decades, patients were routinely instructed to avoid eating or drinking anything except water before getting their routine lab tests. Fasting before blood test was considered a strict rule in hospitals. Back when I was a resident, we always told patients to go do their blood test on an empty stomach. They would line up every morning at the hospital to get all their blood tests done, and every morning that line would stretch out the hospital doors and around the block. Then, by lunchtime, it was a ghost town. Today, this scenario has changed completely. Most patients no longer need to follow fasting before blood test guidelines, because modern testing methods have advanced significantly. Why is Fasting Before a Blood Test no longer important for most patients? The reason this change happened is simple: for the majority of routine tests, fasting does not impact results at all. Tests like complete blood count (CBC), ...