Introduction #1

Closeness of a measurement to the true value

measured portion of a sample

substance that is being measured (ex. Glucose, Cholesterol, Lipase, Tumor markers, etc.)

substance that inhibits clotting

a solution or liquid that resists change in pH when an acid or base is added. This consists of a weak acid and its conjugate base.

standardization or determination of the accuracy of an instrument

serum-based material with assigned values that is considered acceptable to evaluate the accuracy and correctness of a diagnostic assay.

a drying agent or substance capable of absorbing moisture

sealed chamber in which samples can be dried in the presence of a desiccant.

substance that adsorbs or absorbs water and promotes drying

sealable enclosures containing desiccants used for preserving moisture sensitive items such as cobalt chloride paper for another use

specimen taken after the patient has not eaten for 8 to 12 hours

milky coloration of plasma caused by increased lipid accumulation (Triglycerides)

values obtained from a healthy population that represents 95% central tendency

upper and lower curved surface of a solution or liquid

Lower meniscus

Colored or non transparent liquid

procedure for withdrawing blood from the body

yellow liquid portion of unclotted or anticoagulated blood, and contains all clotting factors

the liquid, cell-free part of blood, that has been treated with anti-coagulants ANTI COAGULATED

liquid part of blood after coagulation, therefore devoid of clotting factors as fibrinogen CLOTTED

closeness of repeated results to each other

specimen obtained at a specified time after meal

specimen in which the collection time is not specified, and collected anytime of the day