108 results
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
80 fL) • Iron Deficiency ... (>100 fL) • B12 ... Deficiency • ... Folate Deficiency ... #MCV #Classification
Clinically Important Vitamins and Vitamin Deficiency States
Fat-soluble Vitamins: 
 • Vitamin A - Xerophthalmia, night blindness,
Clinically Important ... Vitamins and Vitamin Deficiency ... • Thiamine B1 ... gestation • Vitamin B12 ... #Vitamins #Deficiency
Overall Approach to Anemia - Differential Diagnosis Algorithm

Blood Loss
 • Acute Bleed - Normocytic / Normochromic
Reticulocytes • Iron Deficiency ... • B12/Folate ... Deficiency • Aplastic ... AnemiaAnemia ... #Classification
Anemia - Underproduction Diagnostic Algorithm
 - Iron deficiency anemia
 - Anemia of chronic inflammation
 - Anemia
Anemia - Underproduction ... Algorithm - Iron deficiency ... anemia - Anemia ... disease - Vitamin B12 ... and/or folate deficiency
Causes of Vitamin B12 Deficiency - Cobalamin
Decreased Intake
Pancreas: Insufficiency
Intestine: SIBO, Celiac disease, IBD, Lymphoma, Amyloidosis, Resection,
Causes of Vitamin B12 ... Deficiency - Cobalamin ... Stomach: Pernicious anemia ... pylori infection, B12 ... #Deficiency #Cobalamin
Algorithmic Approach to Anemia - Differential Diagnosis Framework by MCV

Microcytic (MCV < 80) "TAILS":
 • Thalassemia
Algorithmic Approach to Anemia ... inflammation) • Iron deficiency ... Sideroblastic anemia ... Megaloblastic: Folate deficiency ... , B12 deficiency
Red Blood Cell (RBC) Morphology
Microcytic RBC: Pyridoxine deficiency, Thalassemia, Iron deficiency anemia, Chronic disease anemia (sometimes),
RBC: Pyridoxine deficiency ... Thalassemia, Iron deficiency ... Macrocytic RBC: Vitamin B12 ... or Folate deficiency ... Cell RBC: G6PD deficiency
Causes of Anemia with elevated Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Normal Blood Smear
 •
• Dietary Deficiency ... - Low Serum B12 ... - Low Serum B12 ... • Rule out B12 ... and Folate Deficiency
Algorithm for the evaluation of macrocytic anemia. (RBC = red blood cell; MMA = methylmalonic acid.)
Physicians
of macrocytic anemia ... and a vitamin B12 ... elevated, but anemia ... deficiency is present ... deficiency.
Diagnostic Framework for Anemia (Morphological Approach - MCV)
Low MCV - <80fL - "Microcytic"
 • Iron deficiency
Framework for Anemia ... Microcytic" • Iron deficiency ... Megaloblastic: Vitamin B12 ... deficiency, Folate ... deficiency