Question

RESULTS Run two patients or control samples on the Medonie. Check the results to make sure that specimen with abnormal results or flags are repeated. Staple the reports together and attach to your lab sheet QUESTIONS 1. For each of the following RBC indices, designate if it is DIRECTLY measured or CALCULATED by automated cell counters a. Hemoglobin: b. Hematocrit: c. MCV: d. MCH: c. MCHC: f. RDW: 2. Please calculate the missing RBC indices for each of the following data sets Calculate the MCV, given the following information: Show all work a. Hematocrit = 24.5% RBC Count = 3.5 (x109/L) MCV= b. Hematocrit 45% RBC Count = 4.2 (x10XL) MCV = c. Hematocrit 326 RBC Count 2.8 (x10VL.) MCV = Calculate the MCH. given the following information: d. Hemoglobin = 10.0 g/dL. RBC Count = 3.2 (x10/L.) MCH

Answer 1

1)

a) Hemoglobin : DIRECTLY measured.

b) Hematocrit : CALCULATED

​​​​​c) MCV : DIRECTLY measured.

d) MCH : CALCULATED

e) MCHC : CALCULATED

f) RDW : CALCULATED

2)

MCV = Hematocrit / RBC Concentration

a) Hematocrit = 24.5 % = 0.245

RBC concentration = 3.5 x 10⁶ / uL

​​​​​​MCV = 0.245 / [(3.5 x 10⁶)/10^-6L] = 70 fL

b) Hematocrit = 45 % = 0.450

RBC concentration = 4.2 x 10⁶/ uL

MCV = 0.450 / [(4.2x10⁶)/10^-6L] = 107.1 fL

c) Hematocrit = 32 % = 0.320

RBC concentration = 2.8 x 10⁶ / uL

MCV = 0.320 / [(2.8x10⁶)/10^-6L] = 114.2 fL

MCH = ( Hemoglobin in g/dL x 10) / RBC concentration

​​​​​​d) Hemoglobin = 10.0 g/dL

RBC concentration = 3.2x10⁶/uL

MCH = (10 x 10) / (3.2x10⁶) = 31.25 picograms

e) Hemoglobin = 18.0 g/dL

RBC concentration = 4.5x10⁶/uL

MCH = (18 x 10) / (4.5x10⁶​​​​​​) = 40 picograms

f) Hemoglobin = 15.0 g/dL

RBC concentration = 3.8x10⁶/uL

MCH = (15 x 10) / (3.8x10⁶) = 39.47 picograms

MCHC = ( Hemoglobin in g/dL x 100) / Hematocrit in %

g) Hemoglobin = 11.0 g/dL

Hematocrit = 33%

MCHC = (11x100) / 33 = 33.33 g/dL

h) Hemoglobin = 6.0 g/dL

Hematocrit = 20%

MCHC = (6x100) / 20 = 30 g/dL

i) Hemoglobin = 15.0 g/dL

Hematocrit = 45%

MCHC = (15x100) / 45 = 33.33 g/dL