Blood Testing and Phlebotomy Quiz

Which test is commonly used to identify bacterial infections in the bloodstream?

• Blood culture

• Urinalysis

• Electrolyte panel

• Liver function test

At what stage do preanalytical errors occur in the laboratory process?

• After the specimen has been analyzed

• Before the specimen is tested

• During the analysis of the specimen

• When interpreting the test results

Which of the following actions by a phlebotomy technician could lead to preanalytical errors?

• Using expired collection tubes

• Gently inverting tubes after collection

• Labeling tubes before the blood draw

• Transporting specimens in a timely manner

What is the characteristic of needles used for drawing blood?

• Hollow with a sharp, beveled edge

• Solid with a flat tip

• Hollow with a rounded end

• Available in both hollow and solid forms

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

• A winged collection set and syringe with a 23-gauge needle

• A winged collection set and evacuated tubes with a 21-gauge needle

• A straight, 23-gauge multisample needle and evacuated tubes

• A straight, 21-gauge multisample needle and evacuated tubes

Collection tubes for capillary puncture usually have a volume of

• 1.0–3.0 mL

• 0.125–0.6 mL

• 1.8–2.2 mL

• 0.25–1.0 mL

What are the components measured in a blood analysis called?

• Analytes

• Compounds

• Elements

• Reagents

Which type of blood collection tube is used to obtain serum and contains a gel that separates the serum from the clot after centrifugation?

• EDTA tube

• Serum separator tube (SST)

• Citrate tube

• Fluoride tube

Which additive is used to inhibit glycolysis in blood samples?

• Sodium fluoride

• Heparin

• Citrate

• EDTA

Which type of laboratory test commonly uses a red-topped tube?

• Microbiology

• Serology

• Urinalysis

• Electrolytes