Thursday, 18 May 2017

Auxiliary Materials You Must Not Ignore

There are two categories of materials used in laboratory examination, namely raw/main materials and auxiliary materials.

The raw materials are those involved directly in the reaction with the specimen. The examination result is generated from the reaction between the raw materials and the specimen. An example of the raw material is reagent. Whereas the auxiliary materials are those used in the examination process but not a part of the raw materials and they are not directly involved in the reaction with the specimen, for example medical gloves, gauze, and specimen tubes. They are used to support the examination.

Prodia also focuses on, selects, and evaluates the auxiliary materials before actually using them to support the examination process in all Prodia Clinical Laboratory branches. Though they look trivial, the auxiliary materials have an important role such as affecting the accuracy of the examination result and affecting the comfort of patients and working process.

The auxiliary materials are included in the component of Quality Assurance in the implementation of Good Laboratory Practice (GLP) because they contribute to the examination result. Therefore, to ensure the examination result quality, Prodia Clinical Laboratory conducts independent evaluation on the auxiliary materials before using them.

Material or substance of the auxiliary materials must be inert (nonreactive to the specimen' s substance or analyte). If the material or the substance of the auxiliary materials reactive to the specimen or releases certain substance into the specimen, the impact may disrupt the reaction between the specimen and the reagent, it may cause the inaccuracy of the examination result.

Some examples of the evaluated auxiliary materials

- Blood collection tube

The blood collection tube will directly react to the blood/serum/plasm specimen. Therefore, it may change the blood composition and affect the final laboratory examination result.

- Medical gloves

The medical gloves are used by the staff when drawing the patient' s blood. It must be replaced with the new one for each patient. The important factors when evaluating the medical gloves are the material, thickness, elasticity, and convenience. The medical gloves are made from hypoallergenic material and powder free to avoid the contamination on the specimen. The gloves must be tear resistant and sufficiently thin to enable the staff feel the veins.

- Alcohol cotton

The alcohol cotton is used to clean the area on the skin from which the blood is drawn, to make it sterile and contamination free for the specimen or the patient. During the evaluation, the time required for the alcohol to dry and sterilize the skin must be considered. Alcohol must vaporize quickly to shorten the time required before drawing the blood specimen.

- Cotton/gauze

Cotton or gauze is used to press the wound and to stop the hemorrhagic on the area where the blood has been drawn. Gauze is more commonly used than cotton since the cotton fiber tends to stick to the wound.

The auxiliary materials that do not pass the evaluation will not be used in Prodia Clinical Laboratory. In line with the commitment of Prodia to give the examination result which is accurate, reliable, and safe for the patients, these things become the focus of Prodia.

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