Phlebotomy Certification Nha Ascp Practice Exam

Question 1 Phlebotomy Certification Nha Ascp

What is the term for a vein that moves away from the needle during puncture?

Increased risk of nerve, tendon, and artery damage due to lack of tissue protection. A "rolling" vein. Because capillary blood clots quickly, so EDTA tubes for hematology must be filled early to prevent microclots. The hand (dorsal metacarpal veins) and, rarely, the foot/ankle (with physician approval).

Question 2 Phlebotomy Certification Nha Ascp

What is the recommended handling for a specimen that requires chilling on ice?

Tests such as ammonia, lactic acid, and blood gases require immediate immersion in ice slurry. The antecubital fossa (bend of the elbow). The expiration date, sterility of packaging, and gauge size appropriate for the vein. Centrifuge after complete clotting (for serum), following manufacturer's time/speed guidelines, with tube stoppers on.

Question 3 Phlebotomy Certification Nha Ascp

What does "hemostasis" mean?

A measured portion of a larger specimen used for a specific test. To prevent stinging pain, hemolysis, and specimen contamination. "Milking" the finger; it causes hemolysis and tissue fluid contamination. The process by which the body stops bleeding through clot formation.

Question 4 Phlebotomy Certification Nha Ascp

What is the correct order of draw for a light blue top tube?

Sodium polyanethol sulfonate (SPS); used for blood cultures. Light blue (sodium citrate) is drawn second, after blood culture bottles and before serum/red tubes. The bevel should face up. Fainting or a temporary loss of consciousness.

Question 5 Phlebotomy Certification Nha Ascp

What vaccination must be offered free of charge to employees at risk of bloodborne pathogen exposure?

Provides a reliable, wearable identifier to confirm patient identity at the bedside. The Hepatitis B vaccine. Provides more control and flexibility for small, fragile, or difficult veins such as in children or elderly patients. To prevent accidental needlestick injury; if recapping is unavoidable, a one-handed "scoop" technique should be used.

Question 6 Phlebotomy Certification Nha Ascp

What does "antecubital" refer to?

The area in front of (ante-) the elbow (cubital), i.e., the bend of the elbow. "Probing" — it increases risk of nerve damage, hematoma, and patient discomfort. A substance that prevents blood from clotting. Approximately 20–25°C (68–77°F).

Question 7 Phlebotomy Certification Nha Ascp

What is the effect of failing to separate serum from cells promptly?

1. Blood cultures (yellow SPS)
2. Light blue (sodium citrate)
3. Serum tubes (red/gold, SST)
4. Green (heparin)
5. Lavender (EDTA)
6. Gray (sodium fluoride) Do not proceed; resolve the discrepancy with nursing staff before collecting the specimen. Glycolysis and cell metabolism continue, causing falsely low glucose and falsely elevated potassium. Discard the specimen and recollect it — never label away from the patient.

Question 8 Phlebotomy Certification Nha Ascp

What does QNS mean in specimen processing?

Quantity Not Sufficient — an inadequate specimen volume for testing. Try the other arm, apply warm compress, have the patient make a fist, or ask a colleague for assistance. The threat or attempt to touch a patient without consent, causing fear of harm. A critical/sentinel event that requires immediate correction and often recollection.

Question 9 Phlebotomy Certification Nha Ascp

What antiseptic is used instead of alcohol for blood culture or blood alcohol collections?

Chlorhexidine gluconate or povidone-iodine (not alcohol, for blood alcohol tests specifically avoid alcohol entirely). It establishes trust, ensures informed consent, and reduces patient anxiety, supporting professional and legal standards of care. Increased risk of tissue damage, thrombosis, and slower healing, especially in diabetic patients. A localized collection of blood outside a blood vessel, often under the skin.

Question 10 Phlebotomy Certification Nha Ascp

In which phase do most laboratory errors occur?

The preanalytical phase (e.g., mislabeling, hemolysis, wrong tube). After light blue and before tubes containing anticoagulants like heparin, EDTA, and fluoride. A specimen with ruptured red blood cells, giving it a pink/red tinge. To prevent cross-contamination of additives between tubes, which can alter test results.

Question 11 Phlebotomy Certification Nha Ascp

What is the additive in a black top tube and its use?

Professional negligence by a healthcare provider that results in substandard care and patient harm. Sodium citrate (buffered, 3.8%); used for Westergren erythrocyte sedimentation rate (ESR). A 9:1 ratio of blood to citrate; the tube must be filled completely for accurate coag results. At least 30 minutes to allow complete clot formation.

Question 12 Phlebotomy Certification Nha Ascp

What should be done if a patient's wristband information does not match the requisition?

Do not proceed; resolve the discrepancy with nursing staff before collecting the specimen. Analytes like bilirubin and vitamin B12 degrade when exposed to light, causing falsely low results. Release the tourniquet, remove the needle immediately, and apply firm pressure to the site. Failure to act with the standard of care a reasonably prudent person would exercise, resulting in harm.

Question 13 Phlebotomy Certification Nha Ascp

What does "aliquot" mean in laboratory terminology?

Centrifuge after complete clotting (for serum), following manufacturer's time/speed guidelines, with tube stoppers on. Specimen may be contaminated with tissue fluid, leading to inaccurate results. A measured portion of a larger specimen used for a specific test. Duty, Dereliction (breach) of duty, Direct cause, and Damages.

Question 14 Phlebotomy Certification Nha Ascp

What are the three main veins in the antecubital fossa used for venipuncture?

The median cubital, cephalic, and basilic veins. Chlorhexidine gluconate or povidone-iodine (not alcohol, for blood alcohol tests specifically avoid alcohol entirely). A regulation (29 CFR 1910.1030) requiring employers to protect employees from occupational exposure to blood and body fluids. Clean with 70% isopropyl alcohol in a circular motion from the center outward, and allow to air dry.

Question 15 Phlebotomy Certification Nha Ascp

What does HIPAA stand for and what does it protect?

HIV, Hepatitis B (HBV), and Hepatitis C (HCV). Health Insurance Portability and Accountability Act — protects patient privacy and confidentiality of health information. Signatures/initials of every person who handled the specimen, with date/time at each transfer. The Hepatitis B vaccine.

Question 16 Phlebotomy Certification Nha Ascp

Why is the order of draw reversed (EDTA before other additives) in capillary collection compared to venipuncture?

Inflammation of a vein with clot formation, sometimes resulting from repeated venipuncture at the same site. Risk of inaccurate results, further injury, or specimen contamination. The process by which the body stops bleeding through clot formation. Because capillary blood clots quickly, so EDTA tubes for hematology must be filled early to prevent microclots.

Question 17 Phlebotomy Certification Nha Ascp

Why is it important to avoid drawing above an existing IV line?

Preanalytical, analytical, and postanalytical phases. EDTA — an anticoagulant that binds calcium; used for hematology tests like the CBC. The specimen may be diluted or contaminated by IV fluids, skewing results. Health Insurance Portability and Accountability Act — protects patient privacy and confidentiality of health information.

Question 18 Phlebotomy Certification Nha Ascp

What is the primary vein of choice for venipuncture?

K2EDTA with a special label; used for blood bank type and crossmatch testing. Respect the refusal, do not proceed, and document/report it to the appropriate nursing staff/supervisor. The median cubital vein in the antecubital fossa. Relating to an infection acquired in a hospital or healthcare setting.

Question 19 Phlebotomy Certification Nha Ascp

What is the statute of limitations in a legal context?

8 inversions. The time period during which a lawsuit can be filed after an alleged incident. It potentiates antithrombin III, inactivating thrombin and other clotting factors. Random or systematic errors in quality control data.

Question 20 Phlebotomy Certification Nha Ascp

What is the recommended number of inversions for an EDTA (lavender) tube?

8 inversions. The time period during which a lawsuit can be filed after an alleged incident. The cephalic vein — it is less anchored but still relatively safe. Increased risk of tissue damage, thrombosis, and slower healing, especially in diabetic patients.

Question 21 Phlebotomy Certification Nha Ascp

What is a patient's right to refuse a procedure called?

The right of informed refusal; patients may decline venipuncture even after explanation. The specimen may be diluted or contaminated by IV fluids, skewing results. To graphically track QC results over time and detect trends or shifts indicating testing problems. To prevent stinging pain, hemolysis, and specimen contamination.

Question 22 Phlebotomy Certification Nha Ascp

Where does the green top (heparin) tube fall in the order of draw?

Provides a reliable, wearable identifier to confirm patient identity at the bedside. The bevel should face up. 8 inversions. After serum tubes and before lavender (EDTA) and gray (fluoride) tubes.

Question 23 Phlebotomy Certification Nha Ascp

What should a phlebotomist do if a patient reports sharp shooting pain or tingling during venipuncture?

Stop the procedure immediately and remove the needle. K2EDTA; used for lead testing (certified lead-free tube). Because capillary blood clots quickly, so EDTA tubes for hematology must be filled early to prevent microclots. Clean with 70% isopropyl alcohol in a circular motion from the center outward, and allow to air dry.

Question 24 Phlebotomy Certification Nha Ascp

Which tube is drawn first in the order of draw?

Increased risk of nerve, tendon, and artery damage due to lack of tissue protection. The preanalytical phase (e.g., mislabeling, hemolysis, wrong tube). Blood culture bottles/tubes (yellow SPS) to maintain sterility. A measured portion of a larger specimen used for a specific test.

Question 25 Phlebotomy Certification Nha Ascp

What color and symbol designate biohazardous waste?

A condition caused by medical treatment or examination, such as an injury from a procedure. Orange or red bags/containers with the biohazard symbol. The defined boundaries of tasks and procedures a phlebotomist is legally and professionally authorized to perform. A measured portion of a larger specimen used for a specific test.

Question 26 Phlebotomy Certification Nha Ascp

Which common test requires the specimen to be transported warm (37°C)?

"Phlebo-" (vein) + "-tomy" (incision/cutting) — the practice of drawing blood from a vein. Slightly adjust needle position or angle; if unsuccessful after minor adjustment, discontinue and try another site. Cold agglutinins testing. To prevent additive carryover that could contaminate serum tests and affect analyte results.

Question 27 Phlebotomy Certification Nha Ascp

What is the difference between quality control and quality assurance?

The area with underlying nerves and the brachial artery, particularly near the basilic vein. QC monitors test accuracy using known samples; QA is the broader system ensuring overall process and outcome quality throughout the testing cycle. The practice of treating all blood and body fluids as potentially infectious, regardless of patient diagnosis. When filled to approximately three-quarters (3/4) full.

Question 28 Phlebotomy Certification Nha Ascp

Why must EDTA tubes be checked for clots before hematology testing?

Sharp, shooting pain, tingling, numbness, or electric shock sensation radiating down the arm. Failure to act with the standard of care a reasonably prudent person would exercise, resulting in harm. Clots indicate improper mixing and will produce inaccurate cell counts. Tiny red spots from capillary bleeding under the skin, often indicating a bleeding/clotting disorder or fragile capillaries.

Question 29 Phlebotomy Certification Nha Ascp

What gauge needle is typically used for pediatric or fragile veins?

Clot activator and gel separator; used for serum chemistry testing. The expiration date, sterility of packaging, and gauge size appropriate for the vein. Transport upright, in a leak-proof biohazard bag, gently to avoid hemolysis or agitation. 23 gauge (butterfly/winged infusion set).

Question 30 Phlebotomy Certification Nha Ascp

What is the purpose of an aliquot in specimen processing?

To prevent the spread of infection between patients and healthcare workers. It avoids the risk of the patient simply agreeing to an incorrectly stated name (yes/no bias). A portion of the original specimen transferred to a secondary container for testing or storage, preserving the primary sample. No — the same CLSI order of draw sequence applies when filling tubes from a syringe.

Question 31 Phlebotomy Certification Nha Ascp

What are the three primary bloodborne pathogens of concern in healthcare?

Misidentification can lead to wrong diagnosis, treatment errors, or transfusion reactions, some of which are fatal. HIV, Hepatitis B (HBV), and Hepatitis C (HCV). Kept at room temperature and tested/separated within a specific time frame (often 1-4 hours), never chilled. A retractable lancet with a safety mechanism.

Question 32 Phlebotomy Certification Nha Ascp

What is the Joint Commission's requirement regarding patient identifiers?

At least two patient identifiers must be used, neither being the patient's room number. A critical/sentinel event that requires immediate correction and often recollection. Apply pressure with gauze to the site immediately, without bending the arm. It contains smooth muscle and elastic tissue that helps regulate vessel diameter.

Question 33 Phlebotomy Certification Nha Ascp

How long should a tourniquet remain applied before release?

No longer than 1 minute to avoid hemoconcentration. Ask the patient to state and spell their full name and date of birth, and verify against photo ID if required. After light blue and before tubes containing anticoagulants like heparin, EDTA, and fluoride. QC monitors test accuracy using known samples; QA is the broader system ensuring overall process and outcome quality throughout the testing cycle.

Question 34 Phlebotomy Certification Nha Ascp

What does it mean for a vein to be "anchored"?

A measured portion of a larger specimen used for a specific test. Personal Protective Equipment — gloves, and as needed gown, mask, and face shield. 3 to 4 inches (7.5–10 cm) above the site. The vein is supported by surrounding tissue and does not roll easily when punctured.

Question 35 Phlebotomy Certification Nha Ascp

What is the term for excessive probing/redirecting the needle to find a vein?

"Phlebo-" (vein) + "-tomy" (incision/cutting) — the practice of drawing blood from a vein. It establishes trust, ensures informed consent, and reduces patient anxiety, supporting professional and legal standards of care. "Probing" — it increases risk of nerve damage, hematoma, and patient discomfort. Sodium fluoride/potassium oxalate; inhibits glycolysis, used for glucose and lactate testing.

Question 36 Phlebotomy Certification Nha Ascp

What is the additive in a pink top tube and its use?

Duty, Dereliction (breach) of duty, Direct cause, and Damages. Sodium polyanethol sulfonate (SPS); used for blood cultures. K2EDTA with a special label; used for blood bank type and crossmatch testing. Because capillary blood clots quickly, so EDTA tubes for hematology must be filled early to prevent microclots.

Question 37 Phlebotomy Certification Nha Ascp

Does the order of draw differ for a syringe draw compared to a tube holder draw?

No — the same CLSI order of draw sequence applies when filling tubes from a syringe. HIV, Hepatitis B (HBV), and Hepatitis C (HCV). Bending the arm does not stop bleeding effectively and can increase risk of hematoma. Chlorhexidine gluconate or povidone-iodine (not alcohol, for blood alcohol tests specifically avoid alcohol entirely).

Question 38 Phlebotomy Certification Nha Ascp

What is in a red top (plain) tube and its use?

No additive; blood clots naturally, used for serum chemistry, serology, and blood bank testing. Sodium citrate (buffered, 3.8%); used for Westergren erythrocyte sedimentation rate (ESR). Perpendicular (across) the fingerprint ridges, not parallel. Relating to an infection acquired in a hospital or healthcare setting.

Question 39 Phlebotomy Certification Nha Ascp

What constitutes battery in a legal/phlebotomy context?

Unauthorized physical contact with a patient, such as performing venipuncture without consent. Approximately 20–25°C (68–77°F). K2EDTA; used for lead testing (certified lead-free tube). Signatures/initials of every person who handled the specimen, with date/time at each transfer.

Question 40 Phlebotomy Certification Nha Ascp

Why is patient identification considered the most critical step in phlebotomy?

A relative increase in nonfilterable blood components caused by prolonged tourniquet application (over 1 minute). Misidentification can lead to wrong diagnosis, treatment errors, or transfusion reactions, some of which are fatal. No longer than 1 minute to avoid hemoconcentration. Sodium polyanethol sulfonate (SPS); used for blood cultures.

Question 41 Phlebotomy Certification Nha Ascp

What additive is in a lavender/purple top tube and what is it used for?

Lithium heparin with gel separator; used for plasma chemistry (e.g., STAT electrolytes). Increased risk of tissue damage, thrombosis, and slower healing, especially in diabetic patients. EDTA — an anticoagulant that binds calcium; used for hematology tests like the CBC. Latex allergy from gloves or tourniquets, or allergy to adhesive bandages/antiseptics.

Question 42 Phlebotomy Certification Nha Ascp

What is a chain of custody and when is it required?

HIV, Hepatitis B (HBV), and Hepatitis C (HCV). Two attempts; after that, another phlebotomist should be asked to try. The practice of treating all blood and body fluids as potentially infectious, regardless of patient diagnosis. A documented, unbroken record of specimen handling and transfer, required for legal/forensic specimens (e.g., drug testing).

Question 43 Phlebotomy Certification Nha Ascp

Which tube is drawn immediately after blood cultures?

The time period during which a lawsuit can be filed after an alleged incident. HIV, Hepatitis B (HBV), and Hepatitis C (HCV). The light blue sodium citrate tube (coagulation studies). Steps before testing, including test ordering, patient identification, specimen collection, and transport.

Question 44 Phlebotomy Certification Nha Ascp

Why are foot and ankle veins avoided for venipuncture unless necessary?

It can cause hemoconcentration and falsely elevated potassium, ionized calcium, and lactate levels. An external quality assessment where labs test unknown samples to verify accuracy against peer laboratories. Increased risk of tissue damage, thrombosis, and slower healing, especially in diabetic patients. Kept at room temperature and tested/separated within a specific time frame (often 1-4 hours), never chilled.

Question 45 Phlebotomy Certification Nha Ascp

What is a vasovagal reaction (syncope) during blood draw?

A test result that is life-threatening and requires immediate notification to the healthcare provider. A fainting response triggered by anxiety or pain, causing a drop in heart rate/blood pressure. Previous puncture sites, bruising, infection, or edema at the site. Misidentification can lead to wrong diagnosis, treatment errors, or transfusion reactions, some of which are fatal.

Question 46 Phlebotomy Certification Nha Ascp

What is a hematoma and what causes it?

A collection of blood under the skin (bruise) caused by blood leaking from the vein during or after puncture. The light blue sodium citrate tube (coagulation studies). A test result that is life-threatening and requires immediate notification to the healthcare provider. An external quality assessment where labs test unknown samples to verify accuracy against peer laboratories.

Question 47 Phlebotomy Certification Nha Ascp

What is the correct order of draw for venipuncture (ETS)?

To minimize contamination by tissue thromboplastin and other additives that could affect clotting results. 1. Blood cultures (yellow SPS)
2. Light blue (sodium citrate)
3. Serum tubes (red/gold, SST)
4. Green (heparin)
5. Lavender (EDTA)
6. Gray (sodium fluoride) It potentiates antithrombin III, inactivating thrombin and other clotting factors. On the medial or lateral plantar surface of the heel, avoiding the posterior curvature.

Question 48 Phlebotomy Certification Nha Ascp

What is the correct technique for tube activation using an evacuated tube system?

The expiration date, sterility of packaging, and gauge size appropriate for the vein. Unauthorized physical contact with a patient, such as performing venipuncture without consent. Push the tube onto the needle inside the holder until the stopper is punctured, allowing the vacuum to draw blood. An external quality assessment where labs test unknown samples to verify accuracy against peer laboratories.

Question 49 Phlebotomy Certification Nha Ascp

Why should tube stoppers remain on during centrifugation?

To prevent aerosol formation, evaporation, and contamination. The expiration date, sterility of packaging, and gauge size appropriate for the vein. Failure to act with the standard of care a reasonably prudent person would exercise, resulting in harm. To prevent accidental needlestick injury; if recapping is unavoidable, a one-handed "scoop" technique should be used.

Question 50 Phlebotomy Certification Nha Ascp

What should be checked on a needle before use?

The cephalic vein — it is less anchored but still relatively safe. "Milking" the finger; it causes hemolysis and tissue fluid contamination. The expiration date, sterility of packaging, and gauge size appropriate for the vein. It is large, well-anchored, and less likely to roll, and is generally less painful to puncture.