What blood tests will be inaccurate using a butterfly syringe?

Blood tests that require a large volume of blood, such as glucose tolerance tests or certain hormone tests, may be inaccurate when using a butterfly syringe due to the smaller blood volume collected. Additionally, specialized tests that require specific handling or processing of blood samples may also be affected by the use of a butterfly syringe. It is important to follow the specific guidelines for each blood test to ensure accurate results.