NHA Phlebotomy Technician Certification Exam (CPT) Phlebotomy-Technician Exam Questions

Answer : B

The phlebotomist should contact the patient to repeat the venipuncture collection, following facility policy and provider notification procedures. A rejected specimen cannot be tested reliably, so the practical correction is recollection using the proper tube, volume, labeling, handling, and transport requirements. Waiting until the next yearly visit is unacceptable because the ordered test was needed for current clinical care. Shredding documentation is improper unless performed under approved records-management procedures, and it does not solve the missing valid specimen. Sending laboratory results by mail is impossible or inappropriate when the specimen was rejected and no valid result exists. Specimen rejection usually results from preanalytical problems such as wrong tube, insufficient volume, hemolysis, clotting in an anticoagulant tube, unlabeled or mislabeled specimen, expired supplies, improper temperature, or delayed transport. The phlebotomist's job is to correct the collection failure promptly and prevent recurrence. Reference topics: Processing Specimens; specimen rejection; recollection; preanalytical error; specimen integrity.

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Answer : A

A surgical mask is most directly indicated for droplet precautions. Droplet precautions are used for organisms transmitted through respiratory droplets generated by coughing, sneezing, or talking. The mask helps protect the phlebotomist's nose and mouth from exposure at close range. A lead apron is used for radiation protection and has no role in droplet isolation. A sterile gown alone does not protect the respiratory mucosa and is not the primary droplet precaution. Shoe covers alone do not address droplet transmission. Depending on facility signage and procedure risk, additional PPE such as eye protection, gown, or gloves may be required, but from the options given, a surgical mask is the key droplet precaution. The phlebotomist should check isolation signs before entering, bring only necessary supplies, perform hand hygiene, wear PPE correctly, and remove PPE safely before leaving. This item tests transmission-based precaution matching: contact, droplet, airborne, and protective isolation are not interchangeable. Reference topics: Safety and Compliance; droplet precautions; PPE; isolation signage; infection control.

Answer : B

If blood flow stops during an evacuated tube collection, the phlebotomist may gently adjust the needle position. Blood flow can stop if the bevel rests against the vein wall, the needle partially exits the vein, the needle passes through the vein, or the tube vacuum is defective. Small, controlled adjustments are acceptable, but aggressive probing is not. Rotating the needle 360 degrees is dangerous and can injure the vein, surrounding tissue, or nerves. Removing the tube and shaking it does not correct needle placement and can hemolyze the specimen. Pulling the needle almost completely out is unsafe because it can leave the vein, cause hematoma, or create a needlestick risk. If gentle adjustment does not restore flow, the phlebotomist should discontinue the attempt according to facility policy and consider recollection. Patient safety and specimen quality are more important than forcing a failed draw. Reference topics: Routine Blood Collections; troubleshooting venipuncture; blood flow failure; needle adjustment; complications prevention.

Answer : D

Underfilling a gray-topped tube can contribute to hemolysis and specimen rejection because the blood-to-additive ratio becomes incorrect. Gray-top tubes commonly contain sodium fluoride and potassium oxalate. When the tube is underfilled, the additive concentration becomes excessive relative to the blood volume, which can damage cells and interfere with specimen integrity. Hemolysis means red blood cells rupture, releasing intracellular contents into the serum or plasma and potentially altering test results. Iatrogenic anemia is caused by excessive or repeated blood removal from a patient, not by underfilling one additive tube. ''Homeostasis'' is the body's general maintenance of internal stability and is not a phlebotomy complication in this context; the clinically relevant term would be hemostasis. Thrombocytosis means an elevated platelet count and is not caused by underfilling a gray-top tube. The technical lesson is blunt: additive tubes must be filled to the required volume and mixed gently by inversion. Reference topics: Processing Specimens; preanalytical error; tube fill requirements; additive ratio; hemolysis.

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Answer : A

For an admitted patient, the phlebotomist should check the patient's identification band. Inpatient identification depends on matching the patient's wristband to the requisition or collection order using required identifiers, commonly full name and date of birth or medical record number. Stating the patient's name and date of birth for the patient to confirm is weaker because it allows passive agreement and does not require the patient to actively provide identifiers. Using the medical chart alone is not sufficient because charts can be misplaced, opened to the wrong patient, or outdated. Comparing the wristband to bedside equipment is also unsafe because equipment stickers may be incorrect, moved, or not patient-specific enough to serve as the primary identifier. The correct process protects against wrong-patient collection, mislabeling, transfusion risk, diagnostic error, and specimen rejection. Reference topics: Patient Preparation; inpatient identification; wristband verification; two patient identifiers; requisition matching; specimen labeling. NHA places patient identification and preparation procedures under core CPT exam domains.

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Answer : C

The basilic vein is usually the last choice for antecubital venipuncture. The median cubital vein is preferred because it is typically large, well anchored, superficial, and less likely to roll. The cephalic vein is commonly the second choice when the median cubital is unavailable. The basilic vein is used cautiously because it lies closer to the brachial artery and median nerve, creating greater risk if the needle is inserted too deeply or inaccurately. The dorsal metacarpal veins are hand veins, not antecubital veins, and may be used when antecubital access is unavailable, often with a butterfly needle and shallow angle. This question tests anatomical risk control. A phlebotomist must not simply pick the most visible vein; they must evaluate vein safety, depth, direction, resilience, patient history, and contraindications such as IV sites, edema, burns, scars, hematomas, fistulas, and mastectomy restrictions. Proper site selection reduces pain, nerve injury, arterial puncture, hematoma, and recollection risk. Reference topics: Routine Blood Collections; antecubital anatomy; vein selection; basilic vein risk.

Answer : C

A specimen requiring immediate processing should be delivered or processed according to stat or time-sensitive protocol. Some analytes degrade rapidly, some cells change after collection, and some tests depend on strict timing. Leaving the specimen until the next courier pickup may cause inaccurate results or rejection. Marking it routine ignores the priority and may delay care. Refrigerating it overnight is inappropriate unless specifically required, and even then it would not satisfy immediate processing. The phlebotomist must recognize priority indicators such as STAT, timed, fasting, peak/trough, chilled, protected-from-light, and immediate-spin requirements. The responsibility does not end when blood enters the tube. Specimen integrity depends on timely transport, correct temperature, proper centrifugation, and accurate documentation. If a delay occurs, the phlebotomist should communicate it according to facility policy rather than silently submitting a compromised specimen. Reference topics: Processing Specimens; stat specimens; time-sensitive processing; transport priority; specimen stability.