Phlebotomy-Technician Certification Exam Guide + Practice Questions Updated 2026

Explanation:
Before leaving an isolation room, the phlebotomist should remove PPE according to the facility’s sequence and perform hand hygiene. PPE removal is a high-risk step because contaminated gloves, gowns, masks, or face protection can transfer organisms to the hands, clothing, supplies, or environment. Wearing the same gloves to the next room is a serious infection-control violation and can transmit pathogens between patients. Used needles must be placed immediately into an approved sharps container, not a bedside trash can. Carrying unused supplies back to a clean supply cart may contaminate the clean supply area; supplies taken into isolation rooms should be limited and handled according to facility policy. The phlebotomist should plan ahead, bring only necessary items, follow isolation signage, disinfect reusable equipment, and dispose of contaminated materials appropriately. This question tests infection-control workflow, not simply PPE recognition.
Reference topics: Safety and Compliance; isolation precautions; PPE removal; hand hygiene; cross-contamination prevention.

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.

Explanation:
Drug testing requires chain of custody documentation when the specimen is collected for legal, employment, forensic, or regulatory purposes. Chain of custody tracks the specimen from collection through transport, receipt, testing, storage, and final disposition. It documents who collected the specimen, who handled it, when transfers occurred, whether seals were intact, and whether the specimen remained secure. This protects the legal defensibility of the result by reducing the possibility of substitution, tampering, contamination, or misidentification. Blood typing requires strict patient identification and specimen labeling because of transfusion risk, but it is not the classic chain-of-custody specimen in this question. HIV testing requires confidentiality and consent requirements according to policy, but not forensic custody tracking in routine care. Tuberculosis testing requires correct collection or test procedure, infection-control precautions, and documentation, not legal custody control. For drug screening, the phlebotomist must follow collection kit instructions exactly, verify identity, seal the specimen properly, complete all required documentation, and maintain specimen security.
Reference topics: Processing Specimens; chain of custody; toxicology testing; forensic specimens; legal documentation.

Explanation:
Blood donation collection requires a large-bore needle because a full unit of blood must be collected efficiently while minimizing hemolysis and maintaining adequate flow into the collection bag. An 18-gauge needle is the correct option from the list. Blood donor collections commonly use larger needles than routine diagnostic venipuncture because donor collection volume is much greater than routine tube collection. A 25-gauge or 27-gauge needle is too small; it would slow flow excessively, increase mechanical stress on cells, and be inappropriate for donor collection. A 21-gauge needle is common for routine adult venipuncture but is not the best answer for blood donation collection because donor procedures require faster sustained flow. The phlebotomist must also confirm donor eligibility, follow blood bank protocol, use correct equipment, maintain aseptic technique, and monitor the donor for adverse reactions. The NHA CPT outline includes phlebotomy for blood donations and blood donation standards such as hemoglobin/hematocrit screening, weight, and complete screening.
Reference topics: Special Collections; blood donation; needle gauge selection; donor collection standards.

Explanation:
For inpatient specimens, the phlebotomist should label the specimen collection container immediately after collection using the patient’s wristband information as the identification source. The key control is bedside labeling in the presence of the patient, after positive identification and collection, so the specimen is tied to the correct patient before it leaves the room. Labeling the lid is unsafe because lids can be removed, switched, or separated from the specimen. Having the patient write demographic information is not an acceptable patient-identification process and does not satisfy laboratory labeling requirements. Provider pre-labeling is also unsafe because it creates a risk of wrong-patient collection if the container is later used for another patient or if identification is not verified at collection. Correct labeling usually includes patient name, second identifier, date and time of collection, collector identity, and any facility-required information. The NHA CPT outline specifically includes patient identifiers, labeling procedures and requirements, documentation, and the task of labeling all specimens.
Reference topics: Routine Blood Collections; patient identification; specimen labeling; documentation requirements.