매달, 우리는 1000명 이상의 사람들이 시험 준비를 잘하고 시험을 잘 통과할 수 있도록 도와줍니다.
NHA Phlebotomy Technician Certification Exam (CPT) 온라인 연습
최종 업데이트 시간: 2026년07월19일
당신은 온라인 연습 문제를 통해 NHA Certifications Phlebotomy-Technician 시험지식에 대해 자신이 어떻게 알고 있는지 파악한 후 시험 참가 신청 여부를 결정할 수 있다.
시험을 100% 합격하고 시험 준비 시간을 35% 절약하기를 바라며 Phlebotomy-Technician 덤프 (최신 실제 시험 문제)를 사용 선택하여 현재 최신 124개의 시험 문제와 답을 포함하십시오.
정답:
Explanation:
A winged infusion set is most appropriate for a patient with small fragile veins. Butterfly devices provide better control, flexible tubing, and a shallower insertion angle, making them useful for hand veins, pediatric patients, geriatric patients, or difficult venous access. A 16-gauge needle is too large for routine diagnostic venipuncture and would likely damage fragile veins. A blood culture bottle adapter is used for blood culture collection but does not solve the problem of fragile vein access by itself. A lancet is used for dermal puncture, not venous collection, and may not provide the volume or specimen type required for ordered venipuncture tests. When using a winged infusion set, the phlebotomist should anchor the vein carefully, insert bevel up at a low angle, stabilize the device , monitor for infiltration, and activate the safety mechanism immediately after withdrawal. Equipment selection is a clinical safety decision, not a convenience choice.
Reference topics: Routine Blood Collections; winged infusion set; fragile veins; equipment selection; venipuncture technique.
정답:
Explanation:
The phlebotomist should perform hand hygiene after removing gloves. Gloves reduce contamination but do not replace hand hygiene. Hands can become contaminated during glove removal, and gloves may have microscopic defects. Putting used gloves in a lab coat pocket is a contamination hazard. Sanitizing gloves for reuse is incorrect because medical gloves used during patient care are single-use items and should be discarded appropriately. Touching clean supplies immediately after glove removal without hand hygiene can contaminate the clean supply area and spread organisms to future patients. Proper glove workflow includes performing hand hygiene before gloving when indicated, wearing gloves for blood collection, avoiding unnecessary surface contact while gloved, removing gloves without contaminating the hands, discarding them properly, and performing hand hygiene afterward. This question tests routine infection-control behavior. Many healthcare-associated contamination events happen through simple missed hand hygiene after glove removal.
Reference topics: Safety and Compliance; hand hygiene; glove removal; standard precautions; contamination prevention.
정답:
Explanation:
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.
정답:
Explanation:
Allowing the antiseptic to dry before puncture helps reduce blood culture contamination. Blood cultures require strict aseptic technique because skin organisms can enter the specimen and produce false-positive results. Repalpating the site after antisepsis with an ungloved finger contaminates the prepared area and should not be done. If repalpation is absolutely necessary, facility policy may require sterile technique or repeat antisepsis. A gray-top tube is not collected before culture bottles; blood cultures are collected first in the order of draw to maintain sterility. Cleaning only the bottle cap is incomplete because both the patient’s skin and bottle access surfaces must be prepared according to procedure. Blood culture quality depends on correct skin antisepsis, adequate drying time, correct bottle order, sufficient volume, separate collection sites when ordered, and accurate documentation. Contaminated cultures can lead to unnecessary antibiotics, longer hospitalization, additional testing, and patient harm.
Reference topics: Special Collections; blood cultures; contamination prevention; antiseptic drying; aseptic technique.
정답:
Explanation:
Restating the patient’s concern for clarification demonstrates active listening. Active listening means giving attention, confirming understanding, and responding appropriately to the patient’s expressed concern .
For example, if a patient says, “I always pass out,” the phlebotomist might respond, “You have fainted during blood draws before, so I’m going to position you safely and get assistance if needed.” Interrupting the patient to save time is poor communication and may cause the technician to miss safety information. Looking away while the patient speaks can appear dismissive and reduce trust. Saying all patients feel the same way minimizes the patient’s concern and is not individualized care. Active listening improves patient cooperation, consent, safety, and collection success. It also helps identify issues such as needle fear, syncope history, allergies, fasting noncompliance, language barriers, or previous complications. In phlebotomy, communication is not soft decoration; it is a safety tool.
Reference topics: Patient Preparation; active listening; patient communication; anxiety reduction; patient interview.
정답:
Explanation:
If a rapidly forming hematoma develops, the phlebotomist should remove the needle and apply pressure. A hematoma occurs when blood leaks into surrounding tissue, often because the needle has gone through the vein, partially exited the vein, or the vein wall has been injured. Continuing the collection can worsen bleeding, increase pain, and compromise the specimen. Asking the patient to pump their fist increases venous pressure and can worsen leakage or alter some test results. Inserting the needle deeper is unsafe because it may worsen vessel injury or strike nearby structures. The correct response is to release the tourniquet, remove the needle, activate the safety device, apply firm pressure, and monitor the site. A bandage should be applied only after bleeding has stopped. The phlebotomist should document or report the complication according to facility policy and avoid recollecting from the affected site.
Reference topics: Routine Blood Collections; hematoma; venipuncture complications; needle removal; post-procedure care.
정답:
Explanation:
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.
정답:
Explanation:
If a specimen must remain warm during transport, the phlebotomist should use an approved warming device according to facility policy. Some tests, such as cold agglutinin-related specimens or specific specialized assays, may require warm handling to prevent analyte or cellular changes. Placing the specimen on ice or refrigerating it would violate warm-transport requirements and could compromise results. Leaving it near a sunny window is uncontrolled, unsafe, and may expose the specimen to light or excessive heat. Temperature requirements must be controlled and documented when required. The phlebotomist should not improvise with unapproved heat sources because overheating can also damage specimens. Proper specimen handling means knowing whether the specimen should be transported at room temperature, chilled, frozen, protected from light, or kept warm. Failure to follow special handling instructions creates preanalytical error and may require recollection.
Reference topics: Processing Specimens; warm specimens; transport requirements; temperature control; specimen integrity.
정답:
Explanation:
Sodium fluoride is commonly found in gray-top tubes used for glucose testing. Sodium fluoride inhibits glycolysis, which helps preserve glucose concentration after collection by slowing cellular glucose consumption. Many gray-top tubes also contain potassium oxalate as an anticoagulant. Sodium citrate is found in light-blue tubes used for coagulation studies because it binds calcium reversibly. EDTA is found in lavender-top tubes and is commonly used for hematology testing such as CBC. SPS is sodium polyanethol sulfonate, an additive used in blood culture bottles or yellow SPS tubes because it supports organism recovery by reducing certain inhibitory effects. Tube additives are not trivia; they determine specimen type and test validity. A glucose specimen collected in the wrong tube or processed late may produce inaccurate results because cells continue metabolizing glucose after collection. The phlebotomist must match test, tube, additive, order of draw, fill volume, and handling requirements.
Reference topics: Special Collections; glucose testing; gray-top tube; sodium fluoride; additive function.
정답:
Explanation:
A patient who is diaphoretic and says they feel faint requires the phlebotomist to delay collection and seek assistance. Diaphoresis, dizziness, pallor, nausea, and weakness can signal an impending syncopal episode. Continuing with venipuncture in this condition increases the risk of falls, needle injury, hematoma, and patient harm. Confirming date of birth is normal patient identification. Asking which arm will be used is a reasonable patient question and does not require delay. A visible median cubital vein is generally favorable for routine venipuncture. The phlebotomist should position the patient safely, preferably reclining or lying down if fainting risk is present, notify appropriate personnel, and proceed only when safe according to facility policy. If symptoms occur during a draw, the technician should remove the tourniquet and needle when safe, activate the safety device, call for help, and monitor the patient.
Reference topics: Patient Preparation; syncope warning signs; patient assessment; collection delay; emergency response.
정답:
Explanation:
When using a syringe for venipuncture, the phlebotomist should transfer blood into tubes using a safety transfer device. A syringe may be used for fragile veins or situations where vacuum pressure could collapse the vein, but it introduces additional handling risk. Pulling the plunger forcefully can cause vein collapse, pain, and hemolysis. Removing tube stoppers and pouring blood into tubes is unsafe because it exposes the specimen and staff to blood, increases contamination risk, and disrupts additive ratios. Attaching a used needle to fill evacuated tubes is dangerous and creates needlestick risk. A safety transfer device allows blood to move from the syringe into evacuated tubes while maintaining a closed system and preserving order of draw. The phlebotomist should also avoid excessive force, fill tubes correctly, mix additive tubes gently, activate safety features, and discard sharps immediately.
Reference topics: Routine Blood Collections; syringe method; blood transfer device; hemolysis prevention; sharps safety.
정답:
Explanation:
Reusing a tourniquet visibly contaminated with blood violates standard precautions. Any reusable equipment contaminated with blood must be cleaned and disinfected according to facility policy, and single-use items must be discarded. Blood is treated as potentially infectious regardless of the patient’s diagnosis or appearance. Wearing gloves during venipuncture is correct practice. Treating all blood as potentially infectious is the core principle of standard precautions. Washing hands after glove removal is also required because gloves can have microscopic defects or hands can become contaminated during removal. A contaminated tourniquet can transfer bloodborne pathogens or other organisms to patients, staff, and surfaces. Phlebotomists should inspect equipment before use, avoid placing supplies on contaminated surfaces, use disposable tourniquets when required, and disinfect reusable items appropriately. Infection-control failures often occur through routine shortcuts, not dramatic emergencies. This question tests whether the technician understands standard precautions as everyday behavior, not just PPE vocabulary.
Reference topics: Safety and Compliance; standard precautions; reusable equipment; blood contamination; infection prevention.
정답:
Explanation:
If a serum specimen is centrifuged before it has fully clotted, fibrin strands can form in the serum. These strands can interfere with testing instruments, cause sample aspiration problems, and lead to inaccurate results or specimen rejection. Serum specimens must be allowed to clot for the required time before centrifugation. Centrifugation does not increase specimen volume, neutralize additives, or sterilize blood. Blood specimens remain potentially infectious regardless of processing. This question tests the difference between serum and plasma. Serum is the liquid portion after clotting; plasma is the liquid portion of anticoagulated blood. If the phlebotomist rushes serum processing, the specimen may look separated but still contain fibrin. The correct workflow includes observing required clot time, balancing centrifuge tubes, using the correct speed and duration, and removing specimens promptly after centrifugation when required. Speed is not quality; specimen integrity is quality.
Reference topics: Processing Specimens; clotting time; serum processing; centrifugation; fibrin formation.
정답:
Explanation:
The appropriate dermal puncture site on an infant is the medial or lateral plantar surface of the heel. These areas reduce the risk of puncturing bone and provide suitable capillary blood flow for neonatal testing. The posterior curvature of the heel should be avoided because the bone may be close to the surface, increasing risk of osteomyelitis or injury. The arch of the foot is not an approved puncture site and may damage nerves, tendons, or deeper structures. The tip of the index finger is inappropriate for infants because there is insufficient tissue depth and greater risk of bone injury. Correct infant dermal puncture also requires using an age-appropriate lancet depth, warming the site if needed, cleaning and drying the skin, wiping away the first drop when required, avoiding excessive squeezing, and collecting specimens in the correct order. Infant blood volume is limited, so collection volume must be minimized.
Reference topics: Special Collections; infant heel puncture; dermal puncture sites; neonatal safety; osteomyelitis prevention.
정답:
Explanation:
The best response is, “Your provider can explain what the result means.” Phlebotomists may explain collection procedures, specimen requirements, and general process steps, but they should not interpret laboratory results, diagnose conditions, or speculate about disease severity. Telling the patient the condition is serious is outside scope and may be inaccurate. Advising the patient to search online is unprofessional and can increase confusion or anxiety. Suggesting the laboratory made an error is also inappropriate unless an authorized investigation has identified an error. The correct response protects patient safety, scope of practice, and communication integrity. Laboratory results must be interpreted in clinical context, including history, medications, symptoms, other test results, and provider assessment. The phlebotomist should route result questions to the ordering provider or authorized clinical staff according to facility policy. This question tests professionalism and communication boundaries.
Reference topics: Patient Preparation; scope of practice; patient communication; result interpretation; professional conduct.