MedCa Phlebotomy Certification Exam
Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What is the primary purpose of performing a venipuncture?
✔✔To collect a blood sample for laboratory testing
Which vein is most commonly used for routine blood draws in adults?
✔✔Median cubital vein
Why is it important to verify a patient’s identity before drawing blood?
✔✔To ensure the sample is matched to the correct patient and prevent errors
What is the first step in preparing a patient for phlebotomy?
✔✔Explain the procedure and obtain consent
Which additive is found in a lavender-top tube?
✔✔EDTA
1
,Why should a phlebotomist avoid drawing blood from an arm with an IV line?
✔✔It can contaminate the specimen and alter test results
How long should a phlebotomist leave a tourniquet in place?
✔✔No longer than one minute to prevent hemoconcentration
What is the proper angle for inserting a needle during a venipuncture?
✔✔15–30 degrees
Which blood collection tube is used for coagulation studies like PT or PTT?
✔✔Light blue-top tube
Why should the site be cleansed with alcohol before venipuncture?
✔✔To reduce the risk of infection
Which patient position is safest for someone at risk of fainting during a blood draw?
✔✔Seated or lying down
2
, What is the recommended depth for a heel stick in an infant?
✔✔No more than 2.0 mm to avoid bone injury
Why is it important to invert tubes containing additives after collection?
✔✔To properly mix the blood with the additive
What is the purpose of using a serum separator tube (SST)?
✔✔To separate serum from cells for testing
Which vein should be avoided in patients with mastectomy on one side?
✔✔The arm on the affected side
What is the proper procedure if a phlebotomist does not obtain blood on the first needle
insertion?
✔✔Withdraw slightly and adjust needle or choose a new site
How should a phlebotomist handle a patient with a hematoma forming during a draw?
✔✔Remove the needle, apply pressure, and document the incident
3
Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What is the primary purpose of performing a venipuncture?
✔✔To collect a blood sample for laboratory testing
Which vein is most commonly used for routine blood draws in adults?
✔✔Median cubital vein
Why is it important to verify a patient’s identity before drawing blood?
✔✔To ensure the sample is matched to the correct patient and prevent errors
What is the first step in preparing a patient for phlebotomy?
✔✔Explain the procedure and obtain consent
Which additive is found in a lavender-top tube?
✔✔EDTA
1
,Why should a phlebotomist avoid drawing blood from an arm with an IV line?
✔✔It can contaminate the specimen and alter test results
How long should a phlebotomist leave a tourniquet in place?
✔✔No longer than one minute to prevent hemoconcentration
What is the proper angle for inserting a needle during a venipuncture?
✔✔15–30 degrees
Which blood collection tube is used for coagulation studies like PT or PTT?
✔✔Light blue-top tube
Why should the site be cleansed with alcohol before venipuncture?
✔✔To reduce the risk of infection
Which patient position is safest for someone at risk of fainting during a blood draw?
✔✔Seated or lying down
2
, What is the recommended depth for a heel stick in an infant?
✔✔No more than 2.0 mm to avoid bone injury
Why is it important to invert tubes containing additives after collection?
✔✔To properly mix the blood with the additive
What is the purpose of using a serum separator tube (SST)?
✔✔To separate serum from cells for testing
Which vein should be avoided in patients with mastectomy on one side?
✔✔The arm on the affected side
What is the proper procedure if a phlebotomist does not obtain blood on the first needle
insertion?
✔✔Withdraw slightly and adjust needle or choose a new site
How should a phlebotomist handle a patient with a hematoma forming during a draw?
✔✔Remove the needle, apply pressure, and document the incident
3
