Term
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Definition
= The total number of cells counted in 9 squares + 10% x 100
Units are cells/mm3 |
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Term
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Definition
Necessary when you see 5+ nucleated RBC’s (NRBC’s)
= The uncorrected WBC count x 100 / The number of NRBC’s you counted during your count + 100 |
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Term
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Definition
= The total number of cells counted in 5 smaller squares within the center square x The dilution factor x (1 / Volume)
The units are cells/mm3
Decreased in anemia, acute leukemia, myelodysplastic anemia, hemorrhages, and hemolysis |
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Term
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Definition
= The total number of platelets in the large center square x 1000
Increased in postsplenectomy, hemorrhage, iron deficiency anemia, and myeloproliferative disorder
Decreased in idiopathic thrombocytic purpera, aplastic anemia, myelodysplastic anemia, and acute leukemia |
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Term
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Definition
| Measured using cyanomethemoglobin |
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Term
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Definition
Measurement of the packed cell volume
Determined on instruments using RBC counts and the MCV
Done in a centrifuge
-10,000 – 15,000g for 5 minutes
Should be 3x the Hgb result |
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Term
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Definition
Hct (%) / RBC count x 10
Determines the average volume of RBC’s |
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Term
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Definition
Hgb (g/dL) / RBC count x 10
The mean of the amount of Hgb in the RBC’s |
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Term
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Definition
Hgb (g/dL) / Hct (%) x 100
Average amount of hemoglobin in a dL of RBC’s |
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Term
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Definition
Rate at which RBC’s settle from plasma
Nonspecific test for inflammation |
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Term
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Definition
Replacing sed rates
Increases before sed rates
Gives you a quantitative result that can be used to monitor rheumatoid arthritis |
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Term
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Definition
RBC’s with residual RNA
Stained with methylene blue |
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Term
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Definition
Count retics in 5 fields of 200 RBC’s
-Number of retics / 10 = % Retics |
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Term
| Solubility Test for Hemoglobin S |
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Definition
Determines if someone has hemoglobin S (aka Sickle-cell anemia)
Abnormal hemoglobin that causes sickling of the RBC’s
The blood is mixed with sodium dithionite
-If the solution is clear, the test is negative
-If the solution is turbid, the test is positive |
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Term
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Definition
= (# of WBC’s counted in 5 fields / 5) x (.2 x109/L)
Fields should be counted at 10x |
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Term
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Definition
= (# of platelets counted in 5 fields / 5) x (15 x 109/L)
Fields should be counted at 100x |
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