Which of the following could account for the red cell indices on Mary Jones reviewing Questions 13
a. Determining a likely cause is not possible.
b. An error in the hemoglobin probably has been made.
c. An error in the red cell count probably has been made.
d. An error in the microhematocrit probably has been made.
ANS: B
The MCV, which uses the hematocrit and red cell count for its calculation, appears to be reasonable. However, both the MCH and MCHC are extremely elevated, suggesting the parameter in error is common to both of them. This is the hemoglobin. A falsely increased hemoglobin will elevate both the MCH and MCHC because hemoglobin is in the numerator for both calculations.
You might also like to view...
Because the tube dilution is the same for all tubes in a serial dilution, the sample dilution for a given tube can be determined using which equation (in all cases N is the number of the tube in the sequence)?
A) Dsample = (Dtube)N B) Dsample = C) Dsample = D) Dsample =
When should an organizational chart be updated?
A) only when there are personnel changes B) at the start or end of each workday C) at the start or end of each workweek D) every few months