NWCA Phlebotomy Technician Credential Practice Exam

These questions are part of the practice quiz. Start practicing

• How should a blood culture specimen be collected to minimize contamination?
• Which statement about serum separator tubes (SST) is true?
• Which statement accurately describes plasma and serum and the collection tubes used for each?
• What is the main purpose of the NWCA phlebotomy credential practice exams?
• How should latex allergy be accommodated in phlebotomy?
• Why should specimens be labeled in the presence of the patient?
• Why is temperature monitoring important during transport of certain specimens?
• What should you tell a patient who asks about the purpose of the draw?
• Which specimen collection tube is commonly used for hemostasis tests?
• Which of the following is a common reason for specimen rejection by the laboratory?
• What is the primary purpose of the light blue top tube?
• Which condition would prevent collecting blood from a patient’s arm vein?
• When blood culture bottles are ordered, which item should be drawn first?
• ABG collection is typically performed by whom and is it routine phlebotomy?
• A solid mass derived from blood constituents that occludes a blood vessel is a _________.
• Which tube color is used for EDTA in common phlebotomy practice?
• Approximately how many minutes does it take for a specimen without additives to clot?
• In which scenario should you not force blood from a vein?
• Which specimen collection tube is commonly used for hematology tests?
• What information must be included on the label at the point of collection for a collected tube?
• Which agency is responsible for disease surveillance and control of communicable diseases?
• To minimize tissue damage when accessing small veins, which approach is supported by the material?
• Which tube color is used for glucose testing due to glycolytic inhibition?
• Which factor can contribute to lipemia in a blood sample?
• Which device is commonly used for difficult venipuncture?
• Which anticoagulant is the chosen option for coagulation blood studies?
• What is the potential consequence of selecting the incorrect tube type for the requested tests?
• The network of blood vessels that includes arteries, veins, and capillaries is called the ___________.
• How should a mislabeled specimen be handled?
• What action is recommended when a blood draw fails after several attempts?
• What is the appropriate action if a specimen clots and recollection is not possible?
• If a patient is obese, what special equipment, if any, would be helpful in the specimen collection process?
• Which anticoagulant is used in blood donation collection sets?
• How should post-collection specimen transport be documented?
• What is the role of root cause analysis (RCA) in phlebotomy QA?
• What is the role of continuous quality improvement in phlebotomy practice?
• When a patient has 'difficult' veins, what strategies, if any, can be used to improve the likelihood of a successful puncture?
• When documenting a patient refusal of a specimen collection, which is the best practice?
• Not verifying test orders before collection increases the risk of what?
• What is the recommended action if a patient faints during venipuncture?
• Before collecting, how should you confirm the accuracy of the lab requisition?
• What should the phlebotomist do with the first drop of blood after a fingerstick?
• CSF is a specimen originating from which anatomical site?
• For inexperienced phlebotomists, when learning how to decontaminate the venipuncture site, it is most important to wipe the area ____________.
• If a doctor orders a laboratory test on an emergency basis, how should it be indicated?
• Which is the proper sequence for removal of isolation apparel after blood collection in an isolation room?
• At what angle should the venipuncture needle be inserted?
• Hemoglobin content is assessed in the laboratory by analyzing __________.
• Which statement about labeling practices is accurate to ensure traceability?
• What does proficiency testing involve in clinical laboratories?
• The credential exam's balance of theory and practice is intended to ensure what?
• What is the recommended action when there is poor skin integrity at the draw site?
• Which color-top tube contains EDTA?
• Prior to collection when fasting is required, which preparation is necessary?
• If a specimen is transported without proper temperature control, what risk is most likely?
• How should a phlebotomist handle an IV line when drawing blood?
• The __________ oversees the investigation and control of various diseases, especially those that are communicable while an agency of the U.S. Department of Labor that requires employers to provide measures that will protect workers exposed to biological and chemical hazards is __________?
• When using the syringe method to collect a blood specimen, how is the blood added into additive and non-additive tubes?
• What is the recommended way to communicate with the patient during the blood draw?
• Excessive, vigorous mixing of a blood specimen collection tube can lead to _________.
• What should be recorded in the chain of custody for drug testing?
• What is the primary purpose of infection control when drawing blood?
• What is the typical order of draw when collecting multiple tubes?
• For a glucose tolerance test, the patient should fast for how many hours?
• During venipuncture, when the blood begins to squirt out in pulses, what might this indicate?
• Which additive is in the gray-top tube used for glucose testing?
• What commonly used intravenous device is sometimes used in patients who are difficult to collect blood from by conventional methods?
• When is immediate processing essential for a specimen?
• Which statement best describes the effect of recent posture on lab values?
• During venipuncture, is it appropriate to release the tourniquet about half-way through the procedure?
• Which statement accurately describes plasma and serum and the tubes used for each?
• What is the standard technique for securing a needle after collection?
• If a patient has a visible infection at the puncture site, what should you do?
• The pink-topped tube is most appropriate for blood bank collections, while the purple-topped tube is most appropriate for which test?
• If a hematoma develops, where should you consider taking the next venipuncture site?
• Which vein is most commonly used for venipuncture?
• What is the average skin puncture depth appropriate for an adult during a blood collection procedure?
• Why does the NWCA Phlebotomy Technician Credential exam focus on both theory and practice?
• Serum specimen tubes should be stored in a(n) ______.
• What is the basic venipuncture technique to minimize vein trauma?
• What occurs as a result of inflammation and disease?
• During a newborn capillary puncture, why is the first drop wiped away before collection?
• Which option is NOT part of the 3-way identification match?
• What is the role of standard precautions in phlebotomy?
• Why is sterile technique essential in blood culture collection?
• In adults, where should capillary blood be collected from?
• Which specimens typically require chain of custody?
• Excessive mixing of a specimen can lead to which rejection condition?
• Blood cultures can be collected directly into culture media and doing so will ________.
• Yellow top tubes are used to collect blood for ____________.
• Which steps are involved in a capillary puncture on a newborn?
• If a morning fasting draw is ordered and the patient appears not to be fasting, which action is appropriate?
• When should you use a butterfly needle?
• For which tests is fasting typically required?
• If a specimen arrives unlabeled or mislabeled in the lab, what is the correct action?
• Which of the following is a serum separation tube?
• Which practice helps prevent needlestick injuries during phlebotomy?
• How should you label blood collection tubes to minimize mislabeling?
• Which statement about patient venipuncture refusals is correct?
• Which infection prevention approach applies to all patients to reduce transmission of microorganisms in healthcare settings?
• Why is it important to verify patient identifiers before collecting specimens?
• Which practice best reduces labeling errors in the lab workflow?
• Which tube color is associated with EDTA and commonly used for hematology tests like CBC?
• Which tube is commonly used for glucose testing and what additive does it contain?
• How should you handle a specimen that arrives with insufficient patient information?
• The laboratory process includes phases. The phase that involves centrifugation and dividing serum into aliquots is the _____ phase, while the phase that involves performing a chemical assay on a serum specimen is the ______ phase.
• Which anticoagulant is found in a green-top blood collection tube?
• Which statement best describes the recommended approach when latex allergy is identified before phlebotomy?
• How should you handle a patient with anxiety or fear about needles?
• For coagulation (hemostasis) testing, which additive is preferred in the collection tube?
• How many times should most tubes be inverted after collection?
• A test request for O & P refers to ____________.
• Assays that require a chilled specimen include which of the following?
• Which tests require rapid handling and immediate transport on ice?
• Which PPE choice is most accurate for routine venipuncture, given facility policy may require more?
• Which factors can interfere with lipemia and icterus in spectrophotometric tests?
• If a drawn tube is mislabeled, what is the proper action?
• A phlebotomist needs a routine blood specimen but the patient is busy with the physician. Which action is most appropriate?
• Which additive is found in a royal blue-topped tube, while a yellow-topped tube has which additive?
• If phlebitis is present at the draw site, you should:
• A phlebotomist needs to collect a routine blood specimen, but the patient is busy speaking with the doctor. What should the phlebotomist do?
• When drawing blood from a patient with a known bleeding disorder, which actions are essential?
• What is the standard patient identification process before drawing blood?
• How should specimens that require cold-chain delivery be transported?
• Which item is necessary to identify a patient when ordering a lab test?
• Steps in the identification process for a phlebotomy procedure should include ______.
• What is the purpose of the thixotropic gel inside the specimen collection tube?
• How many times can sterile needles be used for routine venipuncture?
• How should specimens be transported to the lab to preserve specimen integrity?
• For inexperienced phlebotomists, when learning how to locate arm veins, it is most important to learn how to _______________.
• What is the primary purpose of wearing PPE during phlebotomy procedures?
• If phlebitis is suspected at the draw site, what steps should you take?
• For newborns, the penetration depth of safety lancets for blood collection must be _________.
• Which action best addresses a specimen arriving with missing patient data?
• Which color top tube is used to collect blood for blood cultures?
• Which statement differentiates serum from plasma?
• Which one is a serum separation tube?
• Why verify test orders before collection?
• Which tube is most commonly used for glucose testing?
• Capillary sampling is preferred in which scenarios?
• What are typical consequences of poor specimen labeling?
• What is the importance of time and date stamping on specimen labels?
• Which practice is essential to prevent needlestick injuries?
• What should be done with the first 5–10 mL drawn from an IV line if drawing from an IV line is necessary?
• What is the role of patient consent in phlebotomy?
• What should be documented during a phlebotomy procedure?
• Which action best identifies a patient before drawing blood?
• Which constituent of a blood specimen is considered photosensitive?
• If a vein cannot be located easily, what should you do with the tourniquet?
• Which vein is preferred for venipuncture in most adults?
• Which needle gauge has the smallest diameter?
• Which practice helps prevent needle-stick injuries during blood collection?
• After a blood collection in isolation, which sequence is appropriate for doffing isolation apparel?
• Yellow-topped tubes are typically used for which type of specimen collection?
• What is the main purpose of using two identifiers for patient identification?
• During the venipuncture procedure, what should the phlebotomist do after the needle is inserted and blood begins to flow?
• What vacuum blood collection tube is the top choice for CBC blood collection?
• Which additive is commonly used in the tube for hematology tests to preserve cell morphology?
• Coagulation tests can be affected by ingestion of ________.
• Which statement best describes disposal of used needles?
• Purple-topped tubes are most appropriate for collecting blood for which test?
• If a specimen shows clotting in a test that requires plasma, what action should you take?
• How does patient posture affect venipuncture results?
• The Unopette can be used for microcollection and dilution of blood samples for the WBC count. Which of the following choices best describes the test this supports?
• The purple top tube is associated with which anticoagulant commonly used for CBC testing?
• What is HIPAA’s relevance to phlebotomy practice?
• Which device is commonly used for microcollection of blood for hematocrit testing?
• How should you handle a potential latex allergy during phlebotomy?
• How should you respond to a developing hematoma at the venipuncture site?
• What is the purpose of practicing infection control and hand hygiene?
• In pediatric patients, capillary sampling is often preferred because it is less traumatic and can be used when venous access is difficult.
• What step helps prevent hemolysis during capillary blood collection?
• Hemoglobin content is assessed by analyzing which formed element?
• Which laboratory test result is affected most if the patient is NOT fasting?
• What depth is typically used for venipuncture in an average adult?
• How should you respond if a patient asks about the meaning of their test results?
• Which practice helps prevent backflow or contamination during collection?
• The term "supine" refers to ________.
• Color coding for needles indicates which property?
• If a phlebotomist is assigned to draw an early morning specimen and notices the breakfast tray is empty, what should be done first?
• The term phlebotomy is derived from Greek words meaning __________.
• How many inversions are typical for an EDTA lavender tube?
• Which statement about fasting before collection is correct?
• How should a patient be identified before drawing blood?
• What is the maximum recommended time to keep a tourniquet on a patient’s arm during venipuncture?
• For neonatal capillary collection, which container is typically used to collect samples?
• What is the consequence of underfilling a light blue sodium citrate tube?
• If a hospital policy specifies a time window for drawing, how should you respond?
• If privacy is requested during venipuncture, which statement is most appropriate?
• Which vein is typically preferred for a routine venipuncture?
• Which color-top tube contains fluoride/oxalate?
• What should you do if you cannot feel a vein after palpation?
• What is a key step to minimize vein trauma during venipuncture?
• A phlebotomist walks into a patient room with family members watching TV. What should be done?
• Which collection method is often preferred for difficult veins or pediatric patients?
• Which statement correctly lists the standard order of draw for routine venipuncture tubes?
• Which condition would contraindicate drawing blood from the arm vein?
• Which of the following is the correct disposal instruction for used needles after a blood draw?
• Which statement about fasting and triglyceride levels is true?
• What is the function of fluoride in the gray top glucose tube?
• Which PPE would you emphasize for routine venipuncture, if facility requires additional PPE?
• Which color-top tube is used for coagulation testing requiring sodium citrate?
• Pink-topped tubes are most appropriate for which type of collection?
• Which of the following is a correct statement about the EDTA lavender tube handling?
• Under HIPAA, which practice aligns with proper handling of protected health information (PHI)?
• The Unopette can be used for ______________.
• An abnormal accumulation of fluid in the intercellular spaces is referred to as _____?
• Name three acceptable venipuncture sites besides the median cubital vein.
• What is the purpose of the glycolysis inhibitor in the gray top tube?
• Which tubes are used for serum collection?
• Which tube type is most appropriate for a complete blood count (CBC)?
• Which anticoagulant is found in the gray top tube along with the glycolysis inhibitor?
• The meaning of the term 'phlebotomy' is derived from Greek words meaning which of the following?
• Which factor can cause hemolysis during collection and how can you prevent it?
• What is the purpose of the gel in serum separator tubes (SST)?
• Which factor is a common reason for specimen rejection related to sample handling and labeling?
• What should you do if you must draw blood from an arm that has an IV line in use?
• Which term describes the abnormal accumulation of fluid in the intercellular spaces?
• If a patient is frail and has a tendency to faint, what equipment, if any, would be helpful in the specimen collection process?
• Which statement best describes the standard order of draw for routine venipuncture tubes?
• What is designed to reduce the risk of transmission of microorganisms from both recognized and unrecognized sources of infection in health care facilities?
• What is the recommended response if a patient faints during venipuncture?
• The chain of custody means ________.
• When ordering a laboratory test, which information is required?
• Hemolysis in collected blood can cause a falsely decreased value for __________.
• Why is gentle handling of blood collection tubes important?
• Purple-topped tubes are most appropriate for which hematology test?
• What are common causes of hemolysis in collected samples?
• Why is maintaining correct sample temperature during transport important?
• Which practice helps reduce contamination when obtaining a blood culture by inoculating directly into culture media?
• What is the purpose of a proper specimen transport bag?
• What is the primary purpose of inverting collection tubes after drawing blood?
• What is the primary purpose of chain of custody in certain specimens?
• Which elements should be included when documenting a phlebotomy procedure?
• In the standard order of draw, which tube color is drawn immediately after the light blue top?
• Which type of tube yields serum?
• What is the consequence of exposing blood samples to improper temperatures during transport?
• When is arterial blood gas (ABG) collection typically performed and by whom?
• Which appearance indicates a specimen with high lipid content?
• The term "supine" describes which patient position?