LabCorp Test

Folate Whole Blood Test, RBC

Quick Overview

Detects folate deficiency, monitors therapy with folate, evaluates megaloblastic and macrocytic anemia.

Test #266015


Availability: In stock

Also Known As RBC Folate; hematocrit
Preparation No fasting required. Do not take vitamins containing folic acid three to five days prior to testing. 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.


Folate, RBC is primarily ordered to help evaluate megaloblastic and macrocytic anemia and sometimes can also be ordered with Vitamin B12. They are ordered as follow-up tests when high RBCs and a decreased hemoglobin concentration are seen during a CBC test. Folate (B9), B12, and other tests may be ordered to help evaluate the health and nutritional status of a patient with signs of significant malnutrition or malabsorption.

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