Phlebotomy Ch.8/10 Quiz

Blood is tested for the presence of bacteria by performing a

• (A) Blood culture
• (B) Complete blood count
• (C) Complete blood count with differential
• (D) Coagulation study

Preanalytical errors take place

• (A) Before the patient enters a laboratory for a blood draw
• (B) Before testing is performed on a specimen
• (C) During the testing process
• (D) In the process of creating a treatment plan based on test results

A phlebotomy technician can cause preanalytical errors by

• (A) Filling collection tubes in the wrong order
• (B) Mixing specimens with tube additives immediately after a blood draw
• (C) Labeling a specimen tube after collection
• (D) Delivering a specimen for testing immediately after drawing it

Needles used for venipuncture are

• (A) Hollow with an angled opening
• (B) Solid with a pointed tip
• (C) Hollow with a blunt, rounded opening
• (D) Available in hollow or solid models

What equipment would be best to use when performing venipuncture on an elderly patient currently undergoing chemotherapy?

• (A) A winged collection set and syringe with a 23-gauge needle
• (B) A winged collection set and evacuated tubes with a 21-gauge needle
• (C) A straight, 23-gauge multisample needle and evacuated tubes
• (D) A straight, 21-gauge multisample needle and evacuated tubes

Collection tubes for capillary puncture usually have a volume of

• (A) 1000-3000 microliters
• (B) 125-600 microliters
• (C) 1800-2200 microliters
• (D) 250-1000 microliters

The substances studied in blood tests are called

• (A) Analytes
• (B) Materials
• (C) Factors
• (D) Activators

Which of the following may be present in a collection tube but in most cases does not change the qualities of the blood itself?

• (A) Calcium-binding anticoagulants
• (B) Thrombin-inhibiting anticoagulants
• (C) Clot accelerators
• (D) Separator gel

Glycolysis is prevented by the additive

• (A) Sodium fluoride
• (B) Potassium oxalate
• (C) Sodium oxalate
• (D) EDTA

A red-topped tube is often used for _________ tests.

• (A) Coagulation
• (B) Serology
• (C) Hematology
• (D) Glucose