In women, abnormal development of the Mullerian ducts can lead to a condition known as uterus didelphys, in which the woman has a double set of reproductive tract organs-two each of the uterus, cervix, and vagina.
This test measures the level of Vitamin B6, or Pyridoxine, in the blood. It is recommended that the patient avoid alcohol and vitamins for 24 hours before testing. This Vitamin B6 Test is a blood test. An 8-12 hour fast is recommended before testing. It typically takes 4 business days or less.
Quick Answer. Patients should fast for at least 12 hours before they have a fasting blood test, according to St. John Providence Health System. Not all blood tests require patients to fast, but those that do require that patients abstain from food or any type of beverage besides water before their test.