12 results
Folic acid is a synthetic member of the folate (Vitamin B9) family, a group of chemically
member of the folate ... Dietary folates ... released into circulation ... Overview #Review #Folate ... #VitaminB9
Algorithm for the evaluation of macrocytic anemia. (RBC = red blood cell; MMA = methylmalonic acid.)
Physicians
of macrocytic anemia ... Hemorrhage or hemolysis ... elevated, but anemia ... but undiagnosed, folate ... #VitaminB12 #Folate
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
Index < 2: • Anemia ... , Vitamin B12, Folate ... Retroperitoneal, Uterine • Hemolysis ... Microangiopathic hemolytic ... differential #diagnosis #calculation
Etiologies of Folate Deficiency
 • Decreased dietary intake - uncommon in this era
 • Increased requirements
Etiologies of Folate ... pregnant have hemolytic ... anemia, or psoriasis ... underlying mild folate ... In addition, folate
Algorithmic Approach to Anemia - Differential Diagnosis Framework by MCV

Microcytic (MCV < 80) "TAILS":
 • Thalassemia
Algorithmic Approach to Anemia ... Sideroblastic anemia ... -100): • Non-hemolytic ... , CKD • Hemolytic ... Megaloblastic: Folate
Causes of False Elevation and Reduction in HbA1c

== False Elevation ==
Decreased RBC turnover 
• Iron, B-12,
Iron, B-12, or folate ... Hypertriglyceridemia • Uremia ... blood loss • Hemolytic ... anemia • Splenomegaly
Red Blood Cell (RBC) Morphology
Microcytic RBC: Pyridoxine deficiency, Thalassemia, Iron deficiency anemia, Chronic disease anemia (sometimes),
Iron deficiency anemia ... Vitamin B12 or Folate ... Microangiopathic Hemolytic ... spherocytosis, Autoimmune hemolytic ... Cold autoimmune hemolytic
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Causes of Anemia ... Poisoning • Anemia ... • Bleeding • Hemolysis ... Marrow Failure • Anemia ... Deficiency • Folate
Pancytopenia - Differential Diagnosis

Congenital Diseases:
• GATA2 deficiency
• Fanconi’s anemia
• Wiskott-Aldrich syndrome
• Ribosomopathy or telomeropathy

Cancer:
• Leukemia
• Lymphoma

Inflammatory
deficiency • Fanconi’s anemia ... Antibody-mediated hemolysis ... Vitamin B12 • Folate
Clinically Important Vitamins and Vitamin Deficiency States
Fat-soluble Vitamins: 
 • Vitamin A - Xerophthalmia, night blindness,
• Vitamin E - Haemolytic ... anaemia, ataxia ... paraesthesiae • Folate ... - Anaemia, neural ... Vitamin B12 - Anaemia