Phlebotomy Lab Technician

10+ Phlebotomy Lab Technician Interview Questions and Answers

Updated 12 Jul 2025
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2d ago

Q. Salary expectation edta full from how many department in lab technician

Ans.

Salary expectations for a Phlebotomy Lab Technician can vary depending on experience, location, and employer.

  • Salary expectations can range from $30,000 to $50,000 per year.

  • Factors such as certification, additional skills, and years of experience can impact salary.

  • Researching average salaries in your area and industry can help you determine a reasonable salary expectation.

5d ago

Q. What are the different types of test tubes and what chemicals are in each tube?

Ans.

Different types of test tubes are used for different tests and contain various chemicals such as anticoagulants, preservatives, and clot activators.

  • Purple top tube (EDTA) - used for complete blood count (CBC)

  • Red top tube (no additive) - used for serum tests

  • Green top tube (heparin) - used for plasma tests

  • Gray top tube (sodium fluoride/potassium oxalate) - used for glucose testing

  • Yellow top tube (ACD) - used for DNA testing

  • Blue top tube (sodium citrate) - used for coagulation t...read more

Phlebotomy Lab Technician Interview Questions and Answers for Freshers

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6d ago

Q. What additive is present in the yellow sterile tube?

Ans.

The yellow sterile tube contains sodium polyanetholesulfonate (SPS) as an additive for blood culture collection.

  • Sodium polyanetholesulfonate (SPS) is the primary additive.

  • SPS helps to inhibit the action of antibiotics in blood samples.

  • Used primarily for blood cultures to detect bacterial or fungal infections.

  • The yellow tube is often used in microbiology labs.

4d ago

Q. What are the essential duties of a Phlebotomist?

Ans.

A Phlebotomist's essential duties include drawing blood, labeling samples, and maintaining equipment.

  • Draw blood from patients using various techniques

  • Properly label and store blood samples for testing

  • Maintain and clean equipment to ensure accuracy and safety

  • Verify patient information and medical records

  • Communicate with patients to alleviate anxiety and explain procedures

  • Follow safety protocols to prevent infection and injury

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4d ago

Q. How do you avoid hematomas when drawing blood?

Ans.

To avoid hematomas when drawing blood, proper technique and equipment should be used.

  • Select the appropriate size needle for the patient's vein

  • Apply pressure to the puncture site after withdrawing the needle

  • Avoid probing or reinserting the needle once it is in the vein

  • Ensure the patient is relaxed and not tensing their arm muscles

  • Use a tourniquet for no longer than one minute

  • Release the tourniquet before removing the needle

  • Avoid excessive movement of the needle during the draw

5d ago

Q. How many types of blood culture bottles are there?

Ans.

There are two types of blood culture bottles: aerobic and anaerobic.

  • Aerobic bottles contain oxygen and are used to culture bacteria that require oxygen to grow.

  • Anaerobic bottles do not contain oxygen and are used to culture bacteria that do not require oxygen to grow.

  • Both types of bottles are used together to increase the chances of detecting bacterial growth.

  • The bottles may also contain additives to enhance bacterial growth or to neutralize antibiotics in the blood sample.

  • Pr...read more

2d ago

Q. Describe the proper method for discarding used needles and other sharps.

Ans.

Proper disposal of needles and sharps is crucial for safety and infection control in healthcare settings.

  • Always use a designated sharps container that is puncture-resistant and labeled appropriately.

  • Do not recap needles after use; this increases the risk of accidental needle sticks.

  • Dispose of used needles and sharps immediately after use to prevent accidents.

  • Ensure the sharps container is not overfilled; it should be sealed and disposed of according to facility protocols.

  • Foll...read more

5d ago

Q. What is the correct order of draw for sample collection?

Ans.

The order of drop for sample collection is important to ensure accurate results.

  • Start with blood cultures to avoid contamination

  • Follow with coagulation tubes, then serum tubes, then heparin tubes, and finally EDTA tubes

  • If collecting from a central line, discard the first 5 mL to avoid dilution with saline

  • Mix each tube gently after collection to prevent clotting or hemolysis

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6d ago

Q. From which vein is blood typically collected?

Ans.

Blood is primarily collected from the antecubital fossa, specifically the median cubital vein.

  • The median cubital vein is the most common site for venipuncture.

  • Other veins include the cephalic vein and the basilic vein.

  • The choice of vein may depend on the patient's anatomy and condition.

  • The median cubital vein is preferred due to its size and proximity to the surface.

3d ago

Q. How many types of blood collection tubes are there?

Ans.

There are multiple types of tubes used in phlebotomy for different purposes.

  • There are tubes with additives for blood tests such as serum separator tubes, EDTA tubes, and heparin tubes.

  • Plain tubes without additives are also used for certain tests.

  • Blood culture bottles are used for culturing bacteria.

  • Coagulation tubes are used for testing blood clotting factors.

  • There are also specialized tubes for DNA testing and drug testing.

  • The color of the tube top indicates the type of addi...read more

1d ago

Q. What specimens are collected in lavender-top tubes?

Ans.

Lavender-top tubes are primarily used for collecting blood samples for hematology tests, particularly for complete blood counts.

  • Used for collecting whole blood samples.

  • Commonly used for Complete Blood Count (CBC) tests.

  • Contains EDTA as an anticoagulant to prevent clotting.

  • Ideal for blood smears and other hematological studies.

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4d ago

Q. Different tubes used for blood sample

Ans.

Different tubes are used for blood samples to collect and store different types of blood specimens.

  • Different tubes are color-coded for easy identification.

  • EDTA tubes are used for whole blood specimens for hematology tests.

  • SST tubes are used for serum specimens for chemistry tests.

  • Sodium citrate tubes are used for coagulation tests.

  • Fluoride tubes are used for glucose testing.

  • Plain tubes are used for blood bank tests.

1d ago

Q. Normal values of tests

Ans.

Normal values of tests are the range of values that are considered healthy for a particular test.

  • Normal values vary depending on the test being performed.

  • Normal values are usually provided by the laboratory conducting the test.

  • Abnormal values may indicate a medical condition or disease.

  • Examples of tests with normal values include blood glucose, cholesterol, and hemoglobin levels.

Q. How do you collect samples?

Ans.

Sample collection involves proper techniques to ensure accurate lab results and patient safety.

  • Identify the patient and confirm their identity using two identifiers.

  • Select the appropriate collection site, typically the antecubital fossa.

  • Use aseptic technique to clean the site with an alcohol swab.

  • Choose the correct type of collection tube based on the tests ordered (e.g., EDTA for CBC).

  • Collect the sample at the correct angle and speed to minimize hemolysis.

  • Label the sample im...read more

3d ago

Q. Why did you choose to become a phlebotomist?

Ans.

I chose to become a phlebotomist because I enjoy helping others, have a passion for healthcare, and find the field of laboratory work fascinating.

  • I have a strong desire to help others and make a positive impact on their health

  • I am passionate about the healthcare field and enjoy working in a medical setting

  • I find the process of drawing blood and analyzing samples in the laboratory to be intriguing and rewarding

5d ago

Q. Parameters of RFT and LFT,

Ans.

RFT and LFT assess kidney and liver function, respectively, through specific biochemical parameters.

  • RFT (Renal Function Test) parameters include: Creatinine, Urea, Electrolytes (Sodium, Potassium).

  • LFT (Liver Function Test) parameters include: ALT, AST, Bilirubin, Alkaline Phosphatase.

  • Elevated Creatinine indicates impaired kidney function.

  • High ALT and AST levels suggest liver damage or inflammation.

  • Urea levels help assess kidney's ability to remove waste.

  • Bilirubin levels indic...read more

Phlebotomy Lab Technician Interview Questions
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