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Iron Deficiency Anemia vs Anemia of Chronic Disease - Laboratory Testing

SUMMARY:
 - RDW, FEP, serum iron,
Iron Deficiency ... of Chronic Disease ... - Laboratory Testing ... , saturation-worthless ... #Deficiency #Anemia
Iron Panel Interpretation

Iron deficiency - ↓ Iron, ↑-nl Transferrin / TIBC, ↓ Transferrin Saturation,  ↓
Iron deficiency ... , ↓ Ferritin Anemia ... deficiency + Chronic ... Interpretation #deficiency ... differential #hematology #laboratory
For an elderly patient with multiple comorbidities it can be challenging to determine if their anemia
is secondary to iron ... deficiency as well ... disease. ... #Deficiency #Anemia ... #Transferrin #Saturation
Causes of False Elevation and Reduction in HbA1c

== False Elevation ==
Decreased RBC turnover 
• Iron, B-12,
Causes of False ... RBC turnover • Iron ... -12, or folate deficiency ... • Hemolytic anemia ... End-stage renal disease
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
Deficiency Anemia ... deficiency if: ... • Additional laboratory ... Test for celiac disease ... #Deficiency #Anemia
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Causes of Anemia ... Volume (<80 fL) • Iron ... Deficiency • ... • Folate Deficiency ... Diagnosis #Algorithm #Causes
Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
Gastrointestinal Causes ... of Iron Deficiency ... Anemia • Mass ... sprue, Whipple's disease ... #Deficiency #Anemia
Causes of Iron Deficiency
 • Diet: ↓ Intake, e.g. vegan, Malnutrition, Polyphenol / tannins, ↓ Vitamin
Causes of Iron Deficiency ... : IBD, Chronic disease ... @drkeithsiau #Iron ... #Deficiency #Causes ... differential #diagnosis #anemia
Causes of Iron Deficiency
 • Inadequate Intake: Vegetarian/vegan diet, Malnutrition
 • Increased Body Needs: Infants/preschoolers, Pregnancy,
Causes of Iron Deficiency ... Loss (without anaemia ... Edema, Celiac disease ... IBD, cancer) #Iron ... #diagnosis #causes
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
x (Hct / 45) / Maturation ... Factor The maturation ... deficiencies: Iron ... Chronic kidney disease ... , G6PD deficiency