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To prevent iatrogenic anemia it is necessary to
Detailed Rationale
Documenting every blood draw volume/time in chart tracks cumulative draws preventing excessive phlebotomy (common ICU cause of anemia, >500mL/week risky); enables monitoring Hgb trends/justification. Past illnesses/meds not directly relevant. Nurse consult good but documentation primary.
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A phlebotomist has inadvertently squeezed a patients puncture site firmly during a capillary procedure Which of the following complications could result from this action
Detailed Rationale
Firm squeezing lyses RBCs via trauma releasing intracellular fluid/hemoglobin (hemolysis), falsely elevating potassium/LDH, invalidating specimen; tissue fluid dilution also occurs. Hemostasis is clotting (desired). Homeostasis balance. Hypobilirubinemia low bili unrelated.
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A phlebotomist is instructing a patient who has a suspected UTI about urine sample collection The phlebotomist should instruct the patient to
Detailed Rationale
Midstream clean-catch (discard first-void, collect midstream in sterile container) minimizes urethral/meatal contamination for UTI culture/sensitivity, reducing false positives from colonizing bacteria. Clean container insufficient alone. First morning good for some (routine UA) but not UTI. 24hr for quantitative.
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A phlebotomist is anchoring the vein prior to a venipuncture Which of the following distances from the puncture site should the phlebotomist use
Detailed Rationale
Anchor 1-2 inches below site with thumb/index stabilizing skin taut, immobilizing vein preventing 'rolling' during bevel entry; too far reduces tension. Above anchor compresses vein. 3-4 inches excessive.
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When drawing blood on a preschooler the phlebotomist should
Detailed Rationale
Explaining simply to child/parent (age-appropriate, 'quick pinch like vaccine') reduces anxiety/cooperation improves; preschoolers (3-5yo) understand, builds trust. No surprises traumatizes. Heel/thumb for infants (<1yo).
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For a dermal puncture on an infant the maximum depth of the lancet should be
Detailed Rationale
2 mm max depth for infant heel (medial/lateral) prevents bone/cartilage puncture (calcaneus risk), adequate microsample (100-500uL) while minimizing pain/hemolysis. 3mm excessive. 0.2-0.3mm insufficient adults.
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Which of the following organizations regulates laboratory chemical hazards and exposure
Detailed Rationale
OSHA (Occupational Safety and Health Administration) regulates chemical hazards via Hazard Communication Standard (HazCom/GHS) requiring SDS, labeling, training for lab chemicals (acids, solvents). DEA controlled substances. FDA devices/reagents. CLIA testing.
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A laboratory is scheduled for a routine annual inspection with the primary focus on equipment maintenance logs Which of the following areas will be the focus of the inspection
Detailed Rationale
Electrical safety focus for annual inspections (e.g., CLIA/CAP) verifies maintenance logs for centrifuges, analyzers preventing shocks/fires via grounding, cords, calibration. Mechanical/chemical/radiation separate.
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Which of the following tube additives promotes clot formation
Detailed Rationale
Silica (glass particles in red/SST tubes) activates clotting factors promoting clot formation for serum chemistry (30-60min); heparin/citrate anticoagulants prevent clotting. Oxalate potassium anticoagulant.
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A phlebotomist is collecting a postaccidentinjury blood sample from a Department of Transportation employee Which of the following forms should the phlebotomist complete to comply with federal guidelines
Detailed Rationale
Chain of custody form required for DOT post-accident alcohol/drug testing (49 CFR Part 40) documents specimen integrity from collection to lab for legal defensibility. Others not federal DOT-specific.
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A phlebotomist experiences a needlestick injury and discusses the event with the patients partner without the patients permission The phlebotomist is now in violation of the following
Detailed Rationale
Discussing needlestick (patient PHI exposure) with unauthorized partner violates HIPAA Privacy Rule (45 CFR 164) prohibiting disclosure without consent; breach notification may apply. OSHA/Needlestick Act exposure protocols. Joint Commission accreditation.
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When labeling a nonblood specimen why is it important to place the label on the container itself and not the lid
Detailed Rationale
Label on container (not lid) ensures identification remains with specimen when lid removed for processing/pouring preventing mislabeling/wrong patient results (CLSI/GP41). Lids interchangeable/contaminate but secondary.
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After anchoring the vein which of the following actions should the phlebotomist take next
Detailed Rationale
Clean site with 70% isopropyl alcohol (2% chlorhexidine alt) in circular outward motion x30-60sec air dry next after anchoring to disinfect skin reducing infection risk (CLSI H3); needle exam pre-procedure. No re-tourniquet.
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Which of the following needles should a phlebotomist use for a venipuncture using a winged infusion set and a 5 mL syringe
Detailed Rationale
23G butterfly (winged) ideal for fragile veins/5mL syringe (low vacuum/flow ok), minimizes trauma/hemolysis in peds/elderly/difficult sticks. 18G too large. 25/27G insufficient flow.
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The phlebotomist is instructing a patient on how to collect a C&S stool specimen Which of the following is a correct part of the explanation
Detailed Rationale
Avoid urine in stool (use bedpan) prevents antimicrobial dilution/inhibition of culture growth (C&S enteric pathogens). No toilet (contam). Room temp transport. Timing any.
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Anchoring the selected vein for a venipuncture using a winged infusion set serves which of the following purposes
Detailed Rationale
Anchoring minimizes vein rolling/movement during butterfly bevel entry (fragile veins), stabilizing for successful puncture. Tourniquet still needed. Pain bevel/speed. ID pre-anchor.
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A phlebotomist is preparing to draw blood from an infant To calculate the blood volume that can be drawn which of the following types of patient information must the phlebotomist have
Detailed Rationale
Infant max blood volume: 1-5mL/kg (CLSI C46)/8wk <1yo <3mL total; weight calculates safe draw preventing iatrogenic anemia (5% Hct drop). Others irrelevant.
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Aseptic techniques are followed by phlebotomists during phlebotomy procedures for which of the following reasons
Detailed Rationale
Aseptic (hand hygiene, alcohol cleanse, sterile needle) prevents HAIs (e.g., staph bacteremia) bidirectional patient-phlebotomist (OSHA BBP). Stability additive/temp. Volume skill. Success positioning.
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A large spill has occurred in a laboratory involving venous blood Which of the following actions should the phlebotomist take
Detailed Rationale
EPA/OSHA blood spill: bleach 1:10 (5.25%) soak 10-15min (not 60sec), wipe, disinfect; large spill absorbant first. No cover (spread). Evacuate chemical. Thickener superabsorbent optional.
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When a phlebotomy technician is introducing themselves after entering a patients room which of the following tones of voice should the technician use
Detailed Rationale
Quiet/professional tone calms anxiety, promotes cooperation especially peds/elderly; clear enunciation without shouting. Others intimidate/escalate fear.
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A patient informs the phlebotomist they have experienced syncope in their past venipuncture draws Which of the following body positions should the phlebotomist place the patient in
Detailed Rationale
Recumbent (supine legs elevated) prevents vasovagal syncope (hypotension from sight/smell blood) via gravity return to brain; history mandates. Prone unsafe airway. Seated ok low risk.
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Which of the following complications can result from massaging probing fist pumping and prolonged tourniquet application
Detailed Rationale
Massage/probing/fist pumping >1min tourniquet causes fluid shift RBC concentration (hemoconcentration) falsly elevating proteins/glucose/BUN invalidating electrolytes. Exsanguin bleeding. Arterio hardening. Shock allergy.
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Which of the following describes the process of obtaining implied consent for venipuncture
Detailed Rationale
Implied consent: phlebotomist explains procedure (purpose, risks like hematoma/bleeding), patient verbalizes understanding/offers arm (nods ok adults); routine draw no written. Written explicit high-risk/research. Provider explains optional.
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When performing a blood draw which of the following actions should a phlebotomist take next after confirming the ordered tests on the requisition slip
Detailed Rationale
Verify diet (fasting GTT/trig), allergies (latex/chlorhexidine) post-test confirm pre-equip to prevent errors/cancellations. Hand hygiene first but post-ID. Equipment after. Tourniquet last.
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A phlebotomist is preparing to collect a blood specimen from a patient who has selfreported needle phobia Which of the following actions should the phlebotomist take
Detailed Rationale
Supine for needle phobics prevents vasovagal syncope from anxiety; distraction gum ok but position primary. Elbow 90° std. Warm fragile veins.
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Which of the following actions by a phlebotomist is a HIPAA violation
Detailed Rationale
Releasing lab results to insurance without authorization (payer not 'treatment/payment/ops' exception properly documented) violates HIPAA minimum necessary/disclosure rules. Wrong code billing error. Blank provider incomplete req. Provider lookup TPO ok.
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A phlebotomist finds a patient who is unresponsive and not breathing In which of the following positions should the phlebotomist place the patient before initiating CPR
Detailed Rationale
Supine flat hard surface (back board if bed) aligns airway/chest for effective CPR compressions/breaths (AHA BLS); exposes chest. Others obstruct.
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When performing a blood smear which of the following actions should a phlebotomist take to ensure a quality result
Detailed Rationale
30° angle spreader-push slide creates even thin-thick smear for WBC morphology/RBC inclusion (CLSI H20); 90° streaks. Clotting artifacts/ruins cells.
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A phlebotomist should administer CPR to which of the following patients
Detailed Rationale
CPR for pulseless/non-breathing (cardiac arrest); unresponsive check carotid <10sec. Chest pain alert. Lethargic monitor. SOB oxygen.
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A phlebotomist inserts a needle into a patients vein and observes no blood flow into the tube Which of the following actions should the phlebotomist take first
Detailed Rationale
Slight bevel withdrawal (1-2mm) 'fishes' into vein if thru/backwall; first attempt before reposition. Remove last resort. Lateral risky artery. 90° perpendicular traumatic.
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Which of the following samples should a phlebotomist present to the laboratory first for processing
Detailed Rationale
STAT ER K+ first (life-threatening hypo/hyperkalemia arrhythmia); timed/therapeutic last. DNR no priority. H&H routine postop. Peak timed.
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Which of the following is an appropriate choice for cleaning a surface contaminated with blood or body fluids
Detailed Rationale
10% bleach (1:10) EPA-registered tuberculocidal for blood/body fluids (OSHA BBP); 10-15min contact. Boiling impractical. Povidone skin. Alcohol virucidal insufficient proteins.
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Which of the following types of tests is a phlebotomist allowed to perform according to CLIA regulations
Detailed Rationale
CLIA-waived (low complexity) like fecal occult blood (FOBT/iFOB) phlebotomists perform POCT; flow/genetic/electrophoresis moderate/high complexity lab techs.
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Which of the following pieces of information on a requisition form is critical to patient identification
Detailed Rationale
DOB + name/armband minimum 2 unique ID (CLSI); prevents wrong patient. Physician req info. Blood type result. Contact non-ID.
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An adult patient gives implied consent to a phlebotomist when which of the following occurs
Detailed Rationale
Adult offers arm after explanation implies understanding/consent for routine venipuncture (competent); no written needed. Releases research explicit/family no authority.
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Which of the following methods should a phlebotomist use to invert tubes to prevent clotting
Detailed Rationale
Gentle figure-8 inversion 8-10x mixes additive evenly without hemolysis/trauma for anticoag tubes (EDTA/heparin); shaking lyses RBCs. Rolling insufficient.
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Which of the following tests is performed to identify bacteremia
Detailed Rationale
Blood culture (aerobic/anaerobic bottles incubated 5d) detects bloodstream infection (bacteremia/sepsis). GTT diabetes. Smear morphology. Lactic severity.
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The provider requests a stat chemistry panel Which of the following tubes should the phlebotomist use to draw the specimen
Detailed Rationale
PST lithium heparin (lt green plasma separator) stat chemistry (electrolytes/glucose/BUN rapid sep/analyze); lt blue coag, lavender CBC, red serum slow clot.
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If a phlebotomist receives an accidental needlestick which of the following actions should be taken first
Detailed Rationale
Immediate wash soap/water 15min (no scrub/bleach) removes virus before replication (HBV/HIV); then report. Stop draw. Treatment post-wash.
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Which of the following demonstrates an accurate collection and inversion situation
Detailed Rationale
Yellow (ACD/BD Vacutainer SST?) 8-10x for clot activator/sep; green (heparin) 8-10x, red (serum) 5x gentle, lt blue (sodium citrate coag) 3-4x. Green 1x insufficient.
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Which of the following is the vein of choice for a venipuncture procedure
Detailed Rationale
Median cubital (AC fossa superficial fixed least painful) 1st choice adults ample blood minimal nerve risk. Radial/cephalic alt. Basilic artery risk.
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A patient is on contact isolation precautions What PPE other than the standard gloves would be required
Detailed Rationale
Contact (MRSA/C.diff) requires gown + gloves (change room-patient); don/doff sequence prevents contam. Mask droplet/airborne.
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Which of the following actions by a phlebotomist exhibits proper handling while transporting a CBC
Detailed Rationale
CBC (EDTA lavender RT stable 24h); light/heat/cold alter WBC/morphology. Foil bili/light sens. Heat block ammonia. Ice hemolysis.
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Which of the following meets recommended handling requirements for a blood specimen that is to be collected and tested for the presence of bilirubin
Detailed Rationale
Protect bili serum/plasma from light (amber bag/foil) prevents photo-oxidation degradation (<2h RT ok); transport prompt. Chill ammonia. Heat no.
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A phlebotomist should explain to a male patient that which of the following fluids is used for fertility testing
Detailed Rationale
Semen analysis (volume/count/motility post-ejac abst 2-7d) male fertility. Others female/joint/etc.
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Which of the following specimens should a phlebotomist place in an ice slurry if there is a delay for processing
Detailed Rationale
Ammonia plasma/serum ice slurry (0-4°C) halts breakdown (<30min RT); vitamins RT stable. Bili light protect.
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Which of the following is the first step a phlebotomist should take to prevent the spread of infection
Detailed Rationale
Hand hygiene (soap/water 40-60sec or ABHR >60%alc 20sec) #1 CDC core prevents 30% HAIs; before/after patient. Gloves 2nd. Site/equip after.
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To qualify for blood donation a patient must have a minimum level of 125 gdL for which of the following
Detailed Rationale
Hgb 12.5 g/dL females/13.0 males (HemoCue/copper sulfate) ensures donor safety (Hct>38%/donor unit 450mL ~15% vol loss). PLT/RBC/WBC no min donation.
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A phlebotomist should identify that a blood spot collection for inborn errors of metabolism requires which of the following
Detailed Rationale
Dry completely horizontal 3-4h (no heat/stack) prevents hemolysis/zinc interference newborn screen (PKU/hypothyroid/galactosemia CLIA); >24h reject. 24-48h post-birth. Full saturate. Wipe 1st drop.
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A phlebotomist is preparing to collect a blood specimen from a patient who has active Mycobacterium tuberculosis Which of the following precautions should the phlebotomist follow
Detailed Rationale
Airborne (TB) N95 + private room neg pressure; phlebotomy mask patient cough etiquette. Standard always. Contact Cdiff. Droplet flu.
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