Whether a Complete Blood Count (CBC) is affected by fasting depends on if other tests are being performed on the same blood sample.
According to the provided reference: If your blood is only being tested for a CBC, then you can eat and drink normally before the test. However, if your blood sample is also being used for other tests, you might need to fast.
| Test | Fasting Required? |
|---|---|
| CBC Only | No |
| CBC + Other Tests | Possibly |
Therefore, consider the following:
- CBC Alone: If the CBC is the only test, fasting is typically not required.
- CBC with Additional Tests: If the CBC is ordered with other tests (like a lipid panel or glucose test), fasting may be necessary to ensure accurate results for those other tests. Your doctor will advise you on fasting requirements in this situation.
