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A human peripheral blood smear; NRBCs are visible as larger cells with dark centers.. A nucleated red blood cell (NRBC), also known by several other names, is a red blood cell that contains a cell nucleus.
MCHC can be normal even when hemoglobin production is decreased (such as in iron deficiency) due to a calculation artifact. MCHC can be elevated ("hyperchromic") in hereditary spherocytosis , sickle cell disease and homozygous hemoglobin C disease , depending upon the hemocytometer.
The widely used [21] rule calculating normal maximum ESR values in adults (98% confidence limit) is given by a formula devised in 1983 from a study of ≈1000 individuals over the age of 20: [22] The normal values of ESR in men is age (in years) divided by 2; for women, the normal value is age (in years) plus 10, divided by 2.
Anisocytosis is a medical term meaning that a patient's red blood cells are of unequal size. This is commonly found in anemia and other blood conditions. False diagnostic flagging may be triggered on a complete blood count by an elevated WBC count, agglutinated RBCs, RBC fragments, giant platelets or platelet clumps due to anisocytosis.
Howell–Jolly bodies: small, round inclusions seen in erythrocytes (peripheral blood – MGG stain) This DNA appears as a basophilic (purple) spot on the otherwise eosinophilic (pink) erythrocyte on a standard H&E stained blood smear.
The normal values for infants are about twice as high as for adults, which is the result of their relatively short legs. [citation needed] It does not need to be adjusted for age after adolescence. [6] It has also been shown to have a lower false positive rate in athletes. [12]
The pneumonia severity index (PSI) or PORT Score is a clinical prediction rule that medical practitioners can use to calculate the probability of morbidity and mortality among patients with community acquired pneumonia.
A normal Haller index should be about 2.5. Chest wall deformities such as pectus excavatum can cause the sternum to invert, thus increasing the index. [6] [7] In severe asymmetric cases, where the sternum dips below the level of the vertebra, the index can be a negative value. [8]