NWCA Phlebotomy Technician
Credential Exam Questions + Verified
Answers 100% correct, Update 2026
Which of the following veins is most commonly used for
venipuncture? -
correct answer ✅A. Median Cubital
___________ additive is found in a royal blue-topped blood
collection tube while a yellow-topped blood collection tube has
____________ additive. -
correct answer ✅A. Clot activator; sodium polyanetholesulfonate
The ______ is most appropriate for blood bank collections while
the ______ is most appropriate for the collection of blood for a
DIFF. -
correct answer ✅D. Pink-topped tube; purple-topped tube
When using the syringe method to collect a blood specimen, how is
the blood added into additive and non-additive tubes? -
correct answer ✅D. Using a syringe transfer device attached to the
syringe, insert each tube into the device and allow the blood to
flow freely.
, NWCA Phlebotomy Technician
Credential Exam Questions + Verified
Answers 100% correct, Update 2026
What is the average skin puncture depth appropriate for an adult
during a blood collection? -
correct answer ✅B. 2-3 mm
Assays that require a chilled specimen
include:___________________. -
correct answer ✅D. Gastrin, ammonia, catecholamine, and lactic
acid
"CSF" is a specimen originating from _____________________. -
correct answer ✅D. The spinal column
What is a commonly used intravenous device that is sometimes
used in the collection of blood from patients who are difficult to
collect by conventional methods? -
correct answer ✅C. Butterfly needle or winged infused set
The color coding for needles indicates the ____________. -
correct answer ✅B. Gauge size
Credential Exam Questions + Verified
Answers 100% correct, Update 2026
Which of the following veins is most commonly used for
venipuncture? -
correct answer ✅A. Median Cubital
___________ additive is found in a royal blue-topped blood
collection tube while a yellow-topped blood collection tube has
____________ additive. -
correct answer ✅A. Clot activator; sodium polyanetholesulfonate
The ______ is most appropriate for blood bank collections while
the ______ is most appropriate for the collection of blood for a
DIFF. -
correct answer ✅D. Pink-topped tube; purple-topped tube
When using the syringe method to collect a blood specimen, how is
the blood added into additive and non-additive tubes? -
correct answer ✅D. Using a syringe transfer device attached to the
syringe, insert each tube into the device and allow the blood to
flow freely.
, NWCA Phlebotomy Technician
Credential Exam Questions + Verified
Answers 100% correct, Update 2026
What is the average skin puncture depth appropriate for an adult
during a blood collection? -
correct answer ✅B. 2-3 mm
Assays that require a chilled specimen
include:___________________. -
correct answer ✅D. Gastrin, ammonia, catecholamine, and lactic
acid
"CSF" is a specimen originating from _____________________. -
correct answer ✅D. The spinal column
What is a commonly used intravenous device that is sometimes
used in the collection of blood from patients who are difficult to
collect by conventional methods? -
correct answer ✅C. Butterfly needle or winged infused set
The color coding for needles indicates the ____________. -
correct answer ✅B. Gauge size
