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count (kount) a numerical computation or indication.

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Addis count  determining the number of erythrocytes, leukocytes, epithelial cells, casts, and protein content in an aliquot of a 12-hour urine specimen.

blood count , blood cell count determining the number of formed elements in a cubic millimeter of blood; it may be a complete blood count or it may measure just one of the formed elements.

complete blood count  a series of tests of the peripheral blood, including the hematocrit, the amount of hemoglobin, and counts of each type of formed element.

differential leukocyte count  a count on a stained blood smear of the proportion of different types of leukocytes (or other cells), expressed in percentages.

platelet count  determination of the total number of platelets per cubic millimeter of blood; the direct platelet c. simply counts the cells using a microscope, and the indirect platelet c. determines the ratio of platelets to erythrocytes on a peripheral blood smear and computes the number of platelets from the erythrocyte count.

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count (kount)

v.

To name or list the units of a group or collection one by one in order to determine a total.

n.

1. The act of counting or calculating.

2. The totality of specific items in a particular sample.

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count

a numerical computation or indication.

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differential count

a count, on a stained blood smear, of the proportion of different types of leukocytes (or other cells), previously expressed in percentages but now usually reported in absolute numbers (10⁹/l) for a better indication of abnormalities that may exist.

milk cell count

see milk cell counts.

platelet count

the count of the total number of platelets per liter (10⁹/l) of blood by counting the platelets in a counting chamber, a hematology analyzer, or by estimating the number on a stained blood smear.

sperm count

see semen concentration.

total bacterial count

determination of the total number of bacteria in the sample examined microscopically, then a calculation of the number per ml. These do not distinguish between viable and non-viable organisms. See also breed's direct smear method.

viable bacterial cell count

enumerating the number of viable bacteria present in a sample based on counting the number of colonies from a given dilution.

wool count

an arbitrary number given to wool to indicate its fiber diameter, e.g. 60's, based on an eyeball assessment of the number of hanks of yarn that could be spun from one pound of wool. Now superseded by measurement of the diameter, e.g. 20 microns.

worm count

a total worm count requires a freshly slaughtered cadaver, collection of intestinal or other fluid in an aliquot sample; in the case of lungs it is necessary to digest the tissue; counting actual worms and by multiplication measuring the total worm burden.

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count Lab medicine The enumeration of a thing. See Absolute eosinophil count, Bacterial count, CD4 count, Colony count, Collateral frame count, Differential count, Platelet count, Pollen count, Red cell count, Reticulocyte count, Sperm count, White cell count Surgery A needle and instrument count. See Sponge count.