QUIZ PRACTICAL 1 SAMPLE COLLECTION AND STORAGE

According to the laboratory rules, which of the following personal protective equipment (PPE) is NOT explicitly required?

• Lab coat

• Gloves

• Safety goggle

• Earplug

What is the key difference between plasma and serum?

• Plasma contains water, while serum does not.

• Plasma contains clotting factors, while serum does not.

• Serum is obtained from whole blood, while plasma is not.

• Serum is collected in an EDTA tube, while plasma is not.

For which of the following tests would a Sodium Citrate Vacutainer typically be used?

• Full Blood Count (CBC)

• Coagulation tests (e.g., prothrombin time)

• Blood glucose

• Trace metal analysis

Which additive tube is recommended for a test requiring whole blood for hematology determination, such as a Complete Blood Count (CBC)?

• EDTA tube

• Sodium citrate tube

• Heparin tube

• Serum separator tube

What is the primary purpose of the gel in a Serum Separator Tube (SST)?

• To act as an anticoagulant

• To preserve glucose levels

• To separate serum from clotted blood after centrifugation

• To prevent hemolysis

When should a blood specimen tube be labeled?

• Before the patient enters the room.

• Immediately after the venipuncture, while still with the patient.

• After all samples for the patient have been collected.

• Once the sample arrives in the laboratory.

The variation in lab results due to an individual's diet, exercise, or sleep pattern is classified as:

• Inter-individual Variation

• Pre-analytical Variation

• Intra-individual Variation

• Analytical Variation

Which of the following is an example of a PRE-analytical error?

• A random error in the analyzer.

• A transcription error when reporting the result.

• Improper storage of the specimen before analysis.

• Using the wrong reagent in the test.

A Vacutainer tube with a Sodium Fluoride additive is most appropriate for testing which analyte?

• Cholesterol

• Glucose

• Potassium

• Hemoglobin

What is the main function of the vacuum inside a Vacutainer tube?

• To sterilize the needle

• To prevent the blood from clotting

• To draw blood from the vein into the tube

• To mix the blood with the additive