A portion of a well-mixed sample removed for testing.
Subtance or chemical being analyzed or dected in a specimen.
chemicals added to the blood after collections to prevent clotting
Ability to cause cancer
capable of burning, corroding, or damaging tissue by chemical action.
fluid within the subarachnoid space, the central canal of the spinal cord, and the four ventricles of the brain.
the study of cells using microscopic methods.
a liquid used to dilute a specimen or reagent.
Fluids with high concentration of protein and cellular debris that have escaped from the blood vessels and have been deposited in tissues or on tissue surfaces,
a sac filled with blood that may be the result of the trauma.
A term used to describe a blood sample in which the red blood cells have ruptured.
Cylindric glass or plastic tubes used to deliver fluids.
substances added to a specimen to prevent deterioration of the cells or chemical.
A private or hospital-based laboratory that performs a wide variety of tests, many of them specialized; physicians often send specimens collected in the office to referral laboratories for testing.
the ability of the eye to distinguish two objectives that are very close together; the sharpness of an image.
a sample of body fluid, waste product, or tissue that is collected for analysis.
a direction that an action is to be taken quickly (from the Latin meaning "at once"); an order found on a laboratory requisition indicating that the test must be done immediately.
capable of causing birth defects