Podcast
Questions and Answers
What does a decrease in Mean Cell Volume (MCV) indicate?
What does a decrease in Mean Cell Volume (MCV) indicate?
- Normal-sized red blood cells
- Presence of macrocytes
- Presence of microcytes (correct)
- Increased hemoglobin concentration
Which formula correctly calculates the Mean Cell Hemoglobin (MCH)?
Which formula correctly calculates the Mean Cell Hemoglobin (MCH)?
- MCH = $ rac{Hct}{RBC ext{ ct.}} imes 10$
- MCH = $ rac{Hb}{Hct} imes 100$
- MCH = $ rac{Hb}{RBC ext{ ct.}} imes 10$ (correct)
- MCH = $ rac{Hct}{Hb} imes 10$
What is the reference range for Mean Cell Hemoglobin Concentration (MCHC)?
What is the reference range for Mean Cell Hemoglobin Concentration (MCHC)?
- 80 to 100 g/dL
- 30 to 40 g/dL
- 31 to 37 g/dL (correct)
- 26 to 32 g/dL
Which of the following conditions is associated with an increased MCHC?
Which of the following conditions is associated with an increased MCHC?
What occurs when the MCHC result exceeds 37 g/dL?
What occurs when the MCHC result exceeds 37 g/dL?
Flashcards
MCV
MCV
Average volume of an individual red blood cell (RBC).
MCV Formula
MCV Formula
MCV = (Hct / RBC count) x 10
MCV Reference Range
MCV Reference Range
80 to 100 femtoliters.
MCH
MCH
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MCH Formula
MCH Formula
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MCH Reference Range
MCH Reference Range
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MCHC
MCHC
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MCHC Formula
MCHC Formula
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MCHC Reference Range
MCHC Reference Range
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Hypochromic RBC
Hypochromic RBC
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Normochromic RBC
Normochromic RBC
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Rule of Three
Rule of Three
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Hemoglobin (Hb)
Hemoglobin (Hb)
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Hematocrit (Hct)
Hematocrit (Hct)
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Red blood cells (RBCs)
Red blood cells (RBCs)
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Study Notes
Hemoglobin and Hematocrit
- A patient with 8.0 g/dL hemoglobin has a hematocrit expected range of 21% to 27%.
Erythrocyte Indices
Mean Cell Volume (MCV)
- MCV is the average volume of an individual red blood cell (RBC).
- Formula: MCV = (Hct / RBC count) x 10
- Reference range: 80 to 100 femtoliters
- High MCV = macrocytes
- Normal MCV = normocytes
- Low MCV = microcytes
Mean Cell Hemoglobin (MCH)
- MCH is the average weight or amount of hemoglobin in an individual RBC.
- Formula: MCH = (Hb/RBC count) x 10
- Reference range: 26 to 32 picograms
- High MCH = possible falsely elevated Hgb
- Low MCH = falsely lowered Hgb
Mean Cell Hemoglobin Concentration (MCHC)
- MCHC is the average concentration of hemoglobin in the average RBC.
- Formula: MCHC = (Hb/Hct) x 100
- Reference range: 31 to 37 g/dL or %
- High MCHC = hereditary spherocytosis
- Normal MCHC = normochromic
- Low MCHC = hypochromic
Reminders
- RBCs cannot accommodate more than 37 g/dL Hb.
- MCH and MCHC have limited clinical value, but useful for quality control.
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Description
Test your knowledge on hemoglobin, hematocrit, and erythrocyte indices, including Mean Cell Volume (MCV), Mean Cell Hemoglobin (MCH), and Mean Cell Hemoglobin Concentration (MCHC). This quiz covers the formulas, reference ranges, and implications of various blood component measurements. Ideal for students in healthcare or biology.
