specimen


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specimen

1. Med a sample of tissue, blood, urine, etc., taken for diagnostic examination or evaluation
2. the whole or a part of an organism, plant, rock, etc., collected and preserved as an example of its class, species, etc.

Specimen

 

a sample, usually metal, that may be studied macro-scopically (in macrosections) or microscopically (in microsections). Preparation of a specimen entails grinding the flat surface of a sample and, if microsections are to be examined, polishing the surface. The surface is then etched with chemical reagents or heated in a gaseous atmosphere or in a vacuum. Selective etching and evaporation occur as a result of the differences in the physi-cochemical properties both of the grains of different phases as well as of the different grain-boundary regions. This leads to the formation of a macrorelief, which is visible to the unaided eye, or a microrelief, which must be examined with a microscope.

specimen

[′spes·ə·mən]
(science and technology)
An item representative of others in the same class or group.
A sample selected for testing, examination, or display.
References in periodicals archive ?
It is essential to appreciate that a laboratory report is only as good as the specimen collected.
The standard operating procedure (SOP) for laboratory receipt of specimens required the documentation of the following; date, time of receipt, location of specimen origin, patient's name, type of test, and nursing staffs name who delivered the specimen to the laboratory.
In this study, holes were predrilled into specimens in order to permit the outward permeation of steam, and hence, reduce the risk of specimen swelling or rupture.
Specimen cooling by mechanisms of free convection and radiation to the air with the temperature of 20[degrees]C was considered.
Objectives: To determine the frequency of incidentally diagnosed carcinoma prostate in prostatic specimens removed by transurethral approach for benign prostatic hyperplasia.
Conversion from the current equipment to the new microtube may enable the hematology lab to further improve efficiency and potentially reduce specimen labeling errors.
11] compared the performance of the structural timber in compression parallel and small clear specimens where he states that the compression strength of the structural specimen value has a good agreement between the compression strength provided in the DNA-ECS (Portuguese Nationally Determined Parameters of Eurocode 5) based on the small clear specimen.
4) Further, several studies have demonstrated that bar coding patient specimens reduces specimen misidentification.
A positive/negative (P/N) ratio was calculated from results of the MAC-ELISA for each specimen tested and was interpreted as the following: P/N ratios <2 were reported as negative, P/N ratios 2-<3 were reported as equivocal, and P/N ratios [greater than or equal to] 3 were reported as presumptive positive, as defined in the emergency use authorization.
Regular monitoring of our own incident reports through our reporting system identified a rise in specimen labelling related issues within the organisation and though most errors were corrected through the laboratory checking system, there was potential risk to patients.
All the health care personnel and the lab staff handling the specimens should know and follow proper sterile techniques and guidelines for the careful collection of specimen and disposal of contaminated specimen and other biological material.