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Calculating a Reticulocyte Index (RI)
Reticulocyte Index = Absolute Reticulocyte Count / Maturation Correction
Absolute Reticulocyte Count =
Calculating a Reticulocyte ... Index (RI) Reticulocyte ... Index = Absolute Reticulocyte ... Count = % of reticulocytes ... SatyaPatelMD #Reticulocyte
Anemia Diagnostic Algorithm

Mean corpuscular (cell) volume (MCV): Average RBC size. Under 80 = microcytic. Between 80-95
Reticulocyte count ... in peripheral blood ... High in acute blood ... Corrected reticulocyte ... count OR reticulocyte
Pancytopenia - Differential Diagnosis Algorithm
 • 12-13 g/dL,
 • ANC < 1800/uL,
 • platelet < 150,000/uL

Initial
peripheral smear, reticulocyte ... Production (↓ reticulocytes ... (hemolysis, ↑ reticulocytes
Polychromatophilia - Note 2 large blue-gray erythrocytes as seen on H&E stain. On a stain for
On a stain for reticulocytes ... The reticulocyte ... nucleated red blood ... Path #BloodSmear #Blood
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
labs: CBC, BMP, Reticulocytes ... schistocytes > 1% • ↑ Reticulocyte
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
Reticulocyte Production ... days) it takes a reticulocyte ... the peripheral blood ... including chronic blood ... > 3: • Acute blood
Algorithm for the evaluation of macrocytic anemia. (RBC = red blood cell; MMA = methylmalonic acid.)
Physicians
(RBC = red blood ... peripheral smear, a reticulocyte ... specifically order a reticulocyte ... likely cause if the reticulocyte ... elevation in the reticulocyte
Overall Approach to Anemia - Differential Diagnosis Algorithm

Blood Loss
 • Acute Bleed - Normocytic / Normochromic
Diagnosis Algorithm Blood ... of: Decreased Reticulocytes ... Normal / Decreased Reticulocytes ... Destruction - Increased Reticulocytes
Hematology Algorithms 

Anemia is described as a reduction in the proportion of the red blood cells.
proportion of the red blood ... i.e., corrected reticulocyte ... i.e., corrected reticulocyte ... three peripheral blood ... #Pancytopenia #reticulocytes
Isolated Hyperbilirubinemia - Differential Diagnosis Algorithm
Direct Hyperbilirubinemia: Dubin-Johnson Syndrome, Rotor Syndrome
Indirect Hyperbilirubinemia: 
 - Trauma, Hematoma,
, Haptoglobin, Reticulocyte ... , Haptoglobin, Reticulocyte