Term
| What is a normal WBC count? |
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Definition
6,000-16,000/mm^3.
(We always write out WBC counts. They are in thousands, and we need that number to calculate our absolute numbers in our differential.) |
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Term
| At what power are WBCs counted for a differential? And where? |
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Definition
| Oil immersion, in the monolayer |
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Term
| How do you count for a WBC differential? |
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Definition
| Count 100 WBCs total and how many of each kind of WBC there are in that 100. Those are your %'s |
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Term
| How do you find the absolute WBC counts? |
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Definition
| Multiply the percentage of each WBC by the total WBC count. |
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Term
| When and how do you do a corrected WBC count? |
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Definition
If you see greater than 5 NRBC’S while doing your differential, you need to correct your WBC count.
WBC x 100/ nrbc count+ 100= corrected count
Use this corrected count for your absolutes. This is your true WBC count. |
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Term
| At what power is a WBC count done? |
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Definition
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Term
| How do you do a WBC count? |
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Definition
Look at 10 to 20 fields and get the average WBC number seen in those fields. Multiply this number by 2500.
For example , I saw 50 WBC’s in 10 fields. The average seen is 5. Then take the 5 and multiply by 2500. This gives me an estimated WBC count of 12’500/mm(3). |
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Term
| What absolute band count is considered a left shift? |
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Definition
| An absolute Band count of greater than 300/mm(3) is considered a LEFT SHIFT |
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