Get an estimate of the patient’s platelet count by counting the average number of platelets in 10 fields multiplied by 15,000. Please click here if you would like to use our online counter instead.
Principle:
Microscopically counting the average number of platelets seen in 10 oil immersion fields on a blood film and multiplying by 15,000 gives an estimate of platelet count done by automated hematology analyzers in thousands per microliter of whole blood.
Notes:
- Platelets must be counted in 10 different fields under 1000x magnification.
- Platelets must be counted in the thin area of the blood smear. Fields must have good distribution of cells with little to no overlapping cells.
what is your source for this one? what book? this is of great help in our Laboratory
Hello. We got the formula from LabCE but unfortunately, I can’t find a quotation of their source. We used the same formula in the previous lab I worked in. As stated on their website, some labs use 20000 as their multiplier. I believe the multiplier is established per laboratory depending on how close the estimates are compared to automated methods. This is the link: Platelet Estimates – LabCE.com, Laboratory Continuing Education
[…] count by counting the average number of platelets in 10 fields multiplied by 15,000. Please click here if you would like to use an input form […]
I’ve used this the other day, and it’s awesome! It’s a great and simple tool! 😎
Glad to be of service 😁