Would you like to know what lab results mean? Medical Tests Analyzer Software will explain and clarify your lab test report.

Red cells are smaller than normal lymphocytes and significantly smaller than granulocytes.
If red cells are smaller than normal they are described as microcytic and if larger than normal as macrocytic. They are referred to as microcytes or macrocytes respectively.
Red cells of normal size are said to be normocytic. If red cells show greater variation in size than normal the blood film is said to show anisocytosis. Anisocytosis can be graded as +, ++ or +++ (mild, moderate or severe).
Anisocytosis describes an abnormal variation in the size of red blood cells.

Test results
It is not normal when RBC of unequal size. Found in almost all red-cell diseases; non-specific; arked anisocytosis may be said to be normocytic. Causes include:
·iron deficiency anaemia, especially if mixed with folate deficiency  
·megaloblastic anaemia  
·sideroblastic anaemia  
·blood transfusion - the host and infused blood cells having different sizes  

Definitions of cells by shape
Cell which is approximately spherical in shape so that it has lost its central pallor; the cell outline is regular
Spherocyte of reduced size and therefore diameter
Irregularly contracted cell
Cell of reduced size and diameter with a lack of central pallor but with an irregular outline
Cell with an elliptical outline
Cell with an oval outline
Tear drop poikilocyte
Cell shaped like a tear, less often known as a dacrocyte
Target cell
Cell with a more strongly staining area in the centre of the area of central pallor
Cell with a central slit or stoma
Cell with two or four curved horn-shaped projections
Schistocyte (red cell fragment)
Fragment of a cell, usually angular; a microspherocyte is a particular type of schistocyte
Echinocyte (crenated cell)
Cell with its surface covered with 20–30 small, regular, blunt projections
Cell with its surface covered with two to twenty projections of irregular shape and irregularly distributed
Sickle cell
Cell with a sickle or crescent shape, caused by the presence of a high concentration of an abnormal haemoglobin known as haemoglobin S
Boat-shaped cell
Cell similar in shape to an elliptocyte but with both ends being pointed, usually indicative of the presence of haemoglobin S
SC poikilocyte
Bizarre poikilocyte formed when cells contain both haemoglobin S and haemoglobin C, having some curved edges and some square or rectangular protrusions

All information on this page is intended for your general knowledge only and does not provide medical advice, diagnosis or treatment.