50+ Lab Technician Interview Questions and Answers for Freshers

The liver function test (LFT) does not include a specific test for blood group determination.

• LFT is a group of blood tests that assess the liver's function and health.

• The tests included in LFT are typically used to evaluate liver enzymes, bilirubin levels, and liver function.

• Blood group determination is not a part of LFT; it is usually determined through a separate test called ABO blood typing.

• LFT may include tests such as alanine aminotransferase (ALT), aspartate aminotransf...read more

The order of draw is the sequence in which blood collection tubes are filled during venipuncture.

• The order of draw is important to prevent cross-contamination and ensure accurate test results.

• The most common order of draw is as follows: blood culture tubes, coagulation tubes (sodium citrate), serum tubes, heparin tubes, EDTA tubes, and glycolytic inhibitor tubes.

• Sodium citrate tubes are used for coagulation tests, such as prothrombin time (PT) and activated partial thrombopla...read more

Some of the cement tests conducted according to Indian Standards (IS) include fineness test, soundness test, compressive strength test, and setting time test.

• Fineness test determines the particle size of cement particles.

• Soundness test checks the ability of cement to retain its volume after setting.

• Compressive strength test measures the ability of cement to withstand loads.

• Setting time test determines the time taken for cement to set.

• Other tests include specific gravity test,...read more

I have used a variety of machines including spectrophotometers, microscopes, centrifuges, and PCR machines.

• Spectrophotometers: Used for measuring the amount of light absorbed by a substance.

• Microscopes: Used for magnifying small objects or organisms for observation.

• Centrifuges: Used for separating components of a liquid by spinning it at high speeds.

• PCR machines: Used for amplifying DNA through the polymerase chain reaction process.

The IS code for sand pouring cylinder calibration is IS 2720 (Part 28) - 1983.

• IS 2720 (Part 28) - 1983 is the Indian Standard code for the calibration of sand pouring cylinder.

• This code specifies the method for determining the field dry density of soils using a sand pouring cylinder.

• The code provides guidelines on the apparatus, procedure, and calculations involved in the calibration process.

• It ensures that the sand pouring cylinder is accurate and reliable for measuring the ...read more

The interviewer wants to know about your experience and skills as a lab technician.

• Talk about your education and training in laboratory techniques.

• Mention any previous experience working in a laboratory setting.

• Highlight your ability to follow protocols and procedures accurately.

• Discuss your proficiency in using laboratory equipment and software.

• Emphasize your attention to detail and ability to maintain accurate records.

• Provide examples of how you have contributed to research...read more

MSDS of xylene and acetone and pour point definition.

• MSDS of xylene and acetone provide information on their physical and chemical properties, health hazards, and safety precautions.

• Pour point is the lowest temperature at which a liquid will flow.

• Xylene is a colorless, flammable liquid used as a solvent and in the production of plastics, synthetic fibers, and dyes.

• Acetone is a colorless, volatile liquid used as a solvent and in the production of chemicals, plastics, and pharm...read more

EDTA stands for Ethylenediaminetetraacetic acid. Swabs typically contain 70% isopropyl alcohol.

• EDTA full form is Ethylenediaminetetraacetic acid

• Swabs usually contain 70% isopropyl alcohol

L J chart is used to culture and identify Mycobacterium tuberculosis. It works by providing a selective medium for the bacteria.

• Prepare L J medium by mixing agar, glycerol, and other nutrients

• Sterilize the medium and pour it into petri dishes

• Inoculate the medium with a sample suspected of containing M. tuberculosis

• Incubate the petri dishes at 37°C for several weeks

• Observe for growth of M. tuberculosis colonies, which appear as rough, buff-colored colonies with a dry, wrinkled...read more

Red blood cells are responsible for carrying oxygen from the lungs to the rest of the body and transporting carbon dioxide back to the lungs.

• Carrying oxygen from the lungs to the body tissues

• Transporting carbon dioxide from the body tissues back to the lungs

• Containing hemoglobin, a protein that binds to oxygen and carbon dioxide

• Assisting in maintaining the body's pH balance

The FBS test in semi automer is performed to measure fasting blood sugar levels.

• Collect a blood sample from the patient after an overnight fast

• Centrifuge the blood sample to separate the serum

• Transfer the serum to a semi-automated analyzer

• Load the sample onto the analyzer and initiate the test

• The analyzer will measure the glucose concentration in the serum

• Record the results and interpret them based on the reference range

IS code related to concrete is IS 456:2000.

• IS 456:2000 is the Indian Standard code for Plain and Reinforced Concrete - Code of Practice.

• It provides guidelines for the design and construction of concrete structures.

• The code covers various aspects such as materials, mix design, workmanship, testing, and quality control.

• It is important for ensuring the durability and strength of concrete structures.

• Following IS 456:2000 helps in maintaining the safety and quality of concrete con...read more

A DC motor is an electrical machine that converts electrical energy into mechanical energy.

• DC motors operate on the principle of Lorentz force.

• They have a commutator and brushes that help in the conversion of electrical energy to mechanical energy.

• DC motors are widely used in various applications such as electric vehicles, robotics, and industrial machinery.

• They come in different types such as brushed DC motors, brushless DC motors, and stepper motors.

• DC motors have a simple ...read more

There are several types of tests that can be conducted on cement.

• Some common types of tests for cement include compressive strength test, fineness test, setting time test, soundness test, and heat of hydration test.

• Compressive strength test measures the ability of cement to withstand compressive loads.

• Fineness test determines the particle size of cement.

• Setting time test measures the time taken by cement to set.

• Soundness test checks the stability of cement when exposed to moi...read more

Staircase wiring diagram can be made on paper using standard symbols and conventions.

• Use standard symbols for switches, lights, and wires

• Draw the diagram in a logical sequence

• Label the components and wires clearly

• Follow the conventions for staircase wiring

• Ensure the diagram is easy to read and understand

The minimum CBR value of the blanket material is a measure of its strength and load-bearing capacity.

• CBR stands for California Bearing Ratio, which is a test to determine the strength of a material.

• The minimum CBR value indicates the lowest load that the material can withstand before it starts to deform or fail.

• A higher minimum CBR value indicates a stronger and more durable material.

• For example, if the minimum CBR value of the blanket material is 10, it means that it can wit...read more

KFT stands for Kidney Function Test, which is a group of blood tests used to evaluate how well the kidneys are functioning.

• KFT is used to measure various parameters such as blood urea nitrogen (BUN), creatinine, and electrolyte levels.

• It helps in diagnosing and monitoring kidney diseases, such as chronic kidney disease and acute kidney injury.

• KFT can also provide information about the overall health of the kidneys and help in determining the effectiveness of certain medicatio...read more

There are various types of tests and analyzers used in a lab setting.

• Common types of tests include blood tests, urine tests, genetic tests, and microbiology tests.

• Analyzers can include spectrophotometers, chromatographs, mass spectrometers, and PCR machines.

• Different tests and analyzers are used for different purposes such as diagnosing diseases, monitoring treatment effectiveness, and conducting research.

It is important for a lab technician to work accurately and efficiently to ensure accurate results and maintain a safe working environment.

• Follow standard operating procedures (SOPs) to ensure accuracy in testing procedures

• Maintain cleanliness and organization in the lab to prevent contamination

• Calibrate and maintain equipment regularly to ensure accurate results

• Communicate effectively with team members to ensure smooth workflow

• Adhere to safety protocols to prevent accidents ...read more

To prepare fluid for Cytospin and LBC, follow specific protocols and use appropriate equipment.

• Collect the fluid sample in a sterile container.

• Centrifuge the sample to concentrate the cells.

• Prepare the Cytospin by placing a small amount of the concentrated cells on a slide and spinning it at high speed to create a monolayer.

• For LBC, use a liquid-based cytology kit to process the sample and create a thin layer on a slide for examination.

• Follow all safety and quality control pr...read more

Chemicals are used in various places depending on their properties and intended use.

• Chemicals are used in laboratories for experiments and research.

• They are used in industries for manufacturing products.

• Chemicals are used in agriculture for fertilizers and pesticides.

• They are used in households for cleaning and disinfecting.

• Chemicals are also used in medical field for diagnosis and treatment.

• The place of using chemicals depends on their properties and intended use.

The tube carbamazepine test is used to measure the level of carbamazepine in a patient's blood.

• The test involves collecting a blood sample from the patient.

• The blood sample is then placed in a tube containing a reagent that reacts with carbamazepine.

• The tube is then placed in a spectrophotometer to measure the absorbance of the reaction.

• The absorbance reading is compared to a standard curve to determine the concentration of carbamazepine in the blood.

There are several types of cement tests performed in a laboratory.

• Some common types of cement tests include compressive strength test, setting time test, soundness test, fineness test, and heat of hydration test.

• Compressive strength test measures the ability of cement to withstand a crushing load.

• Setting time test determines the time taken by cement to set and harden.

• Soundness test checks the stability of cement against volume changes.

• Fineness test measures the particle size ...read more

There are different types of cement with specific specifications for various applications.

• Portland cement is the most common type used in construction.

• It is specified by its strength class, such as 32.5, 42.5, or 52.5.

• Other types include white cement, rapid hardening cement, and sulfate-resistant cement.

• Each type has its own unique properties and uses in different construction projects.

Heparin tubes are used to collect blood samples for coagulation testing.

• Heparin tubes contain lithium or sodium heparin to prevent blood clotting.

• Mix the blood gently with the anticoagulant in the tube by inverting it several times.

• Use a syringe to draw blood directly into the tube, ensuring proper mixing.

• Label the tube with patient information and send it to the lab for testing.

• Heparin tubes are commonly used for tests like PT, APTT, and fibrinogen levels.

Yes, I have made PLT slides.

• I have experience in preparing PLT (Peripheral Blood Smear) slides.

• I am familiar with the process of staining and fixing the slides.

• I have used a microscope to examine the slides for abnormalities.

• I have documented and reported the findings based on the slides.

• I have followed safety protocols and maintained cleanliness in the lab.

Albumin is a protein found in the blood that helps regulate blood volume and maintain proper fluid balance in the body.

• Albumin is the most abundant protein in human blood plasma.

• It is produced by the liver and helps transport hormones, vitamins, and drugs throughout the body.

• Albumin also plays a role in maintaining osmotic pressure, which helps prevent fluid from leaking out of blood vessels.

• Low levels of albumin can indicate liver or kidney disease, malnutrition, or other he...read more

Hematology is the branch of medicine concerned with the study of blood, blood-forming organs, and blood diseases.

• Hematology involves the study of blood cells, their formation, function, and diseases.

• It includes the analysis of blood samples to diagnose conditions such as anemia, leukemia, and clotting disorders.

• Hematologists often work in laboratories to perform tests like complete blood count (CBC) and blood smears.

• Treatment of blood disorders may involve blood transfusions,...read more

ESR full form is Erythrocyte Sedimentation Rate.

• ESR is a test that measures how quickly red blood cells settle at the bottom of a test tube.

• It is a non-specific test used to detect inflammation in the body.

• High ESR levels can indicate conditions like infections, autoimmune diseases, and cancer.

Calculation of resistance in T network

• In a T network, the resistors are arranged in a T shape

• The total resistance of a T network can be calculated using the formula: R_total = R1 + (R2*R3)/(R2+R3)

• R1 is the resistor connected to the voltage source, while R2 and R3 are the other two resistors

• The T network is commonly used in audio circuits and impedance matching

LJ Chat & Westgourd Rules are guidelines for communication and behavior in a laboratory setting.

• LJ Chat Rule: Refers to the guidelines for communication and etiquette in a laboratory chat group.

• Westgourd Rule: Refers to the rules for behavior and conduct in the laboratory workspace.

• Examples: LJ Chat Rule - Use professional language in chat discussions. Westgourd Rule - Clean up your workspace after completing experiments.

Order of draw refers to the sequence in which different blood collection tubes should be filled during venipuncture.

• Order of draw is important to prevent cross-contamination of additives between tubes.

• Common order of draw includes tubes for coagulation studies, chemistry tests, and blood cultures.

• For example, tubes with additives should be drawn before tubes without additives to prevent contamination.

Blood culture test involves collecting blood samples and incubating them to check for bacterial growth.

• Collect blood samples from the patient using a sterile technique

• Inoculate the blood samples into culture bottles containing growth media

• Incubate the culture bottles at the appropriate temperature for a specific period of time

• Check for bacterial growth by observing turbidity or using automated systems

• Subculture positive samples to identify the specific bacteria causing the in...read more

Fasting sugar average is a measure of blood glucose levels after fasting for a certain period of time.

• Fasting sugar average is used to diagnose and monitor diabetes.

• It is typically measured after an overnight fast of 8-12 hours.

• Normal fasting sugar average is usually between 70-99 mg/dL.

• Higher levels may indicate prediabetes or diabetes.

• Lower levels may indicate hypoglycemia or other medical conditions.

Sodium fluoride tubes are used to collect blood samples for glucose testing.

• Collect blood sample using a sodium fluoride tube

• Mix the sample gently to prevent clotting

• Store the tube in a cool place until testing

• Commonly used for glucose testing in diabetic patients

Lab components explanation is an important aspect of work experience for a Lab Technician.

• Lab components include equipment, chemicals, and materials used in experiments.

• Understanding the purpose and function of each component is crucial for accurate results.

• Lab technicians must also be knowledgeable about safety protocols and proper handling of components.

• Examples of lab components include microscopes, pipettes, reagents, and glassware.

• Lab technicians may also be responsible ...read more

Common hematology stains include Wright's stain, Giemsa stain, and Romanowsky stain.

• Wright's stain is used for staining blood smears to differentiate between different types of blood cells.

• Giemsa stain is commonly used for staining blood films to detect malaria parasites and other blood parasites.

• Romanowsky stain is a mixture of eosin and methylene blue dyes used for staining blood smears to visualize blood cells.

Gram stain test is a common microbiology test used to differentiate bacteria into two groups based on their cell wall composition.

• Gram stain test helps identify the presence of either Gram-positive or Gram-negative bacteria.

• It involves staining bacterial cells with crystal violet and iodine, followed by decolorization with alcohol and counterstaining with safranin.

• Gram-positive bacteria retain the purple stain, while Gram-negative bacteria appear pink/red.

• This test is commonl...read more

Refractoriness refers to the ability of a material to withstand high temperatures without melting or degrading.

• Refractory materials are used in high-temperature applications such as furnaces, kilns, and incinerators.

• They are typically made of ceramics, metals, or composites with high melting points.

• Examples of refractory materials include alumina, silica, zirconia, and graphite.

• Refractoriness is measured by the refractory temperature, which is the temperature at which a mater...read more

Slip is the difference between actual and theoretical output of a pump or motor.

• Slip is a measure of inefficiency in a pump or motor.

• It is the difference between the actual output and the theoretical output.

• Slip is expressed as a percentage of the theoretical output.

• Slip can be caused by factors such as friction, resistance, and electrical losses.

• For example, a pump with a theoretical output of 100 gallons per minute that only produces 90 gallons per minute has a slip of 10%.

Order of drow refers to a fictional society of dark elves in fantasy literature and games.

• The drow are typically depicted as a matriarchal society ruled by powerful priestesses.

• They are known for their cruelty, cunning, and mastery of magic.

• The most famous drow character is Drizzt Do'Urden from the Forgotten Realms novels.

• The drow society is often portrayed as being in conflict with other races, particularly humans and dwarves.

Group discrepancies refer to differences between groups in a study or experiment.

• There can be discrepancies in demographics, such as age or gender.

• There can be discrepancies in baseline characteristics, such as health status or medication use.

• There can be discrepancies in treatment or intervention received.

• There can be discrepancies in outcomes measured.

• Examples include differences in response to a medication between men and women, or differences in baseline health status bet...read more

Renal function test parameters include creatinine, BUN, eGFR, and urine protein levels.

• Creatinine levels indicate kidney function and are used to calculate eGFR.

• BUN (blood urea nitrogen) levels can indicate kidney function and hydration status.

• eGFR (estimated glomerular filtration rate) is a calculation based on creatinine levels.

• Urine protein levels can indicate kidney damage or disease.

Blood bank is a facility that collects, tests, and stores blood for transfusion.

• Blood banks ensure a safe and adequate supply of blood for transfusion.

• They collect blood from donors and test it for infectious diseases.

• Blood is separated into components like red cells, plasma, and platelets for specific transfusion needs.

• Blood banks also provide blood typing and cross-matching services.

• Examples of blood banks include American Red Cross, Blood Centers of America, and local hosp...read more

To take a sample, ensure proper labeling, use sterile equipment, collect the appropriate amount, and store correctly.

• Label the sample with patient information and collection details.

• Use sterile equipment to prevent contamination.

• Collect the appropriate amount of sample as per the test requirements.

• Store the sample in the correct conditions to maintain integrity.

• Follow proper protocols and guidelines for sample collection.

The 10x rule is a concept that suggests setting goals and taking actions that are 10 times greater than what you initially think is necessary.

• The 10x rule was popularized by author and entrepreneur Grant Cardone in his book 'The 10X Rule: The Only Difference Between Success and Failure'.

• It encourages individuals to aim higher, work harder, and take massive action to achieve their goals.

• By setting goals that are 10 times greater than what you think is necessary, you push yours...read more

SST stands for Serum Separator Tube.

• SST is a type of blood collection tube used to separate serum from blood cells.

• It contains a gel that forms a barrier between the serum and blood cells after centrifugation.

• SST tubes are commonly used in clinical laboratories for various blood tests.

• Examples of tests that require SST tubes include lipid profiles, liver function tests, and hormone assays.