NWCA-Phlebotomy Technician Credential
Exam Answered Questions (Latest 2026)
Which of the following veins is most commonly used for
venipuncture?
a. Median cubital
b. Femoral
c. Great saphenous
d. Brachial - Correct Answers ✅a.
_____________ additive is found in a royal blue-topped blood
collection tube while a yellow-topped blood collection tube
has _______ additive.
a. Clot activator; sodium polyanetholesulfonate
b. Ammonium heparin; trisodium citrate
c. Lithium heparin; EDTA
d. Sodium citrate; lithium heparin - Correct Answers ✅a.
The ___________ is most appropriate for blood bank collections
while the ____ is most appropriate for the collection of blood
for a DIFF.
,NWCA-Phlebotomy Technician Credential
Exam Answered Questions (Latest 2026)
a. Royal blue-topped tube; purple-topped tube
b. Light blue-topped tube; royal blue-topped tube
c. Gold-topped tube; light blue-topped tube
d. Pink-topped tube; purple-topped tube - Correct Answers
✅d.
When using the syringe method to collect a blood specimen,
how is the blood added into additive and non-additive tubes?
a. The needle is removed from the syringe, the caps are
removed from the tubes, and blood is pushed into each tube,
then re-stoppered and mixed.
b. The syringe needle is used to puncture the cap of each
tube, then blood is pushed into each tube
c. Using a clean needle, puncture all tubes to release the
vacuum, then remove the caps and gently fill each tube.
d. Using a syringe transfer device attached to the syringe,
insert each tube into the device and allow the blood to flow
freely. - Correct Answers ✅d.
What is the average skin puncture depth appropriate for an
adult during a blood collection procedure?
, NWCA-Phlebotomy Technician Credential
Exam Answered Questions (Latest 2026)
a. 0.5 to 1.0 mm
b. 2-3 mm
c. 3-5 mm
d. 5.5 mm - Correct Answers ✅b.
Assays that require a chilled specimen include __________.
a. Glucose, cholesterol, and prostatic specific antigen
b. Tests for electrolytes
c. All hematology tests
d. Gastrin, ammonia, catecholamine, and lactic acid -
Correct Answers ✅d.
"CSF" is a specimen originating from ___________.
a. Venous blood
b. Arterial blood
c. Joints
d. The spinal column - Correct Answers ✅d.
Exam Answered Questions (Latest 2026)
Which of the following veins is most commonly used for
venipuncture?
a. Median cubital
b. Femoral
c. Great saphenous
d. Brachial - Correct Answers ✅a.
_____________ additive is found in a royal blue-topped blood
collection tube while a yellow-topped blood collection tube
has _______ additive.
a. Clot activator; sodium polyanetholesulfonate
b. Ammonium heparin; trisodium citrate
c. Lithium heparin; EDTA
d. Sodium citrate; lithium heparin - Correct Answers ✅a.
The ___________ is most appropriate for blood bank collections
while the ____ is most appropriate for the collection of blood
for a DIFF.
,NWCA-Phlebotomy Technician Credential
Exam Answered Questions (Latest 2026)
a. Royal blue-topped tube; purple-topped tube
b. Light blue-topped tube; royal blue-topped tube
c. Gold-topped tube; light blue-topped tube
d. Pink-topped tube; purple-topped tube - Correct Answers
✅d.
When using the syringe method to collect a blood specimen,
how is the blood added into additive and non-additive tubes?
a. The needle is removed from the syringe, the caps are
removed from the tubes, and blood is pushed into each tube,
then re-stoppered and mixed.
b. The syringe needle is used to puncture the cap of each
tube, then blood is pushed into each tube
c. Using a clean needle, puncture all tubes to release the
vacuum, then remove the caps and gently fill each tube.
d. Using a syringe transfer device attached to the syringe,
insert each tube into the device and allow the blood to flow
freely. - Correct Answers ✅d.
What is the average skin puncture depth appropriate for an
adult during a blood collection procedure?
, NWCA-Phlebotomy Technician Credential
Exam Answered Questions (Latest 2026)
a. 0.5 to 1.0 mm
b. 2-3 mm
c. 3-5 mm
d. 5.5 mm - Correct Answers ✅b.
Assays that require a chilled specimen include __________.
a. Glucose, cholesterol, and prostatic specific antigen
b. Tests for electrolytes
c. All hematology tests
d. Gastrin, ammonia, catecholamine, and lactic acid -
Correct Answers ✅d.
"CSF" is a specimen originating from ___________.
a. Venous blood
b. Arterial blood
c. Joints
d. The spinal column - Correct Answers ✅d.
