Proper Specimen Collection for Coagulation Testing Must Be Performed to Eliminate

question 10

Multiple Choice

Proper specimen collection for coagulation testing must be performed to eliminate contamination of substances that will interfere with the test results. Which of the following are considered contaminants for coagulation testing?

• A) Sodium citrate and heparin anticoagulant
• B) Tissue factor and anticoagulant carryover
• C) Air and tissue factor
• D) High hematocrit and anticoagulant carryover

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Definitions:

Stratum

A layer or a series of layers of rock in the ground or a level or layer of a material, typically one of several parallel layers stacked one above the other.

Melanocytes

Cells located in the skin that produce melanin, the pigment responsible for the skin's color and protection against UV radiation.

Keratinocytes

Cells that make up the majority of the epidermis, producing keratin to help form a protective barrier for the skin.

Melanin

A pigment found in the skin, hair, and eyes that gives them color and offers protection against ultraviolet radiation.