CBC

You should get a CBC test as part of your annual health check-up, or if you notice symptoms like tiredness, weakness, fever, frequent infections, easy bruising, bleeding, or pale skin. Doctors also advise it before surgery, during pregnancy, and for monitoring anemia, infections, or the side effects of medications.

A CBC test needs no special preparation, and fasting is not required. Stay hydrated, wear a loose-sleeved shirt, and inform your doctor about any medicines or supplements you take. If other tests, like blood sugar or cholesterol, are being done alongside it, follow any fasting instructions given.

No, fasting is not needed for a CBC test. You can eat and drink as usual beforehand. If your doctor has ordered tests that need fasting alongside it, such as fasting blood sugar or a lipid profile, you may need to avoid food for 8–12 hours before sample collection.