1. Theisen-Toupal J, Horowitz GL, Breu AC (2013) Utility, charge, and cost of inpatient and emergency department serum folate testing. J Hosp Med 8(2):91–95
2. Shojania AM, von Kuster K (2010) Ordering folate assays is no longer justified for investigation of anemias, in folic acid fortified countries. BMC research notes 3(1):22
3. Folate Testing: A Review of the Diagnostic Accuracy, Clinical Utility, Cost-Effectiveness and Guidelines (2015). In: CADTH rapid response reports, vol July. Canadian Agency for Drugs and Technologies in Health Copyright (c) 2015 Canadian Agency for Drugs and Technologies in Health., Ottawa (ON),
4. American Society for Clinical Pathology - Blood folate levels | Choosing Wisely. https://www.choosingwisely.org/clinician-lists/ascp-do-not-order-red-blood-cell-folate-levels/. Accessed November 6 2019
5. Green R, Mitra AD (2017) Megaloblastic anemias: nutritional and other causes. Med Clin 101(2):297–317