Folate Whole Blood Test, RBC
The Folate Whole Blood Test, RBC, measures folate RBC levels in the blood to screen for megaloblastic anemia.
Also Known As:
RBC Folate; hematocrit
Methodology:
Electrochemiluminescence Immunoassay (ECLIA)
Preparation:
No fasting is required. Patients should avoid taking vitamins containing folic acid three to five days prior to testing. Patients should also stop biotin consumption at least 72 hours prior to the collection.
Test Results:
2-3 days. May take longer based on weather, holiday, or lab delays.
Walk-In Lab is prohibited from selling LabCorp tests to residents in the following states:NY, NJ, RI, MA, MD
Also Known As:
RBC Folate; hematocrit
Methodology:
Immunoassay (IA)
Preparation:
No fasting is required. Patients should avoid taking vitamins containing folic acid three to five days prior to testing. Patients should also stop biotin consumption at least 72 hours prior to the collection.
Test Results:
3-5 days. May take longer based on weather, holiday, or lab delays.
Walk-In Lab is prohibited from selling Quest tests to residents in the following states:AZ, NY, NJ, RI
What is the purpose of this test?
Order this Folate Serum Test, which measures folate RBC levels in the blood to screen for megaloblastic anemia. Folate, also referred to as folic acid or vitamin B9, has many crucial functions in the body, such as aiding in the creation of DNA, which is responsible for your distinct genetic makeup. Folate testing is done to check for low levels of the nutrient.
Folate is found naturally in certain foods like:
- Leafy greens
- Nuts
- Citrus fruits
- It's also added to many foods in the form of folic acid
Folate testing is typically done to detect a deficiency. Your healthcare provider may request folate testing if you've had an abnormal CBC or blood smear test that indicates megaloblastic anemia. Megaloblastic anemia causes red blood cells to be unusually large, deformed, and immature and can be caused by a deficiency in folate or vitamin B12. In the early stages, it frequently has no symptoms. During treatment, folate levels are tracked to ensure they return to normal.
When should I order a Folate Whole Blood Test, RBC?
Individuals may order this test if they have experienced symptoms related to megaloblastic anemia. Common signs or symptoms of megaloblastic anemia include:
- Weakness and fatigue
- Shortness of breath
- Abnormal heartbeat
- Pale skin
- Dizziness or feeling light-headed
