300+ Lab Technician Interview Questions and Answers

Quality control levels in hematology are used to ensure the accuracy and reliability of test results.

• Quality control levels in hematology typically include low, normal, and high controls.

• These controls are used to monitor the performance of the hematology analyzer and ensure accurate results.

• For example, a low control may have a known value of 50, a normal control may have a value of 100, and a high control may have a value of 150.

Prothrombin time test is used in the vial to measure the time it takes for blood to clot.

• Prothrombin time test is used to evaluate the clotting ability of blood.

• It is commonly used to monitor the effectiveness of anticoagulant medications.

• The test is performed by adding a reagent to a vial containing the patient's blood sample.

• The time it takes for the blood to clot is measured and compared to a normal range.

• Abnormal results may indicate a bleeding disorder or the need for me...read more

The purpose of a medical lab technician is to perform laboratory tests and procedures to assist in the diagnosis, treatment, and prevention of diseases.

• Conducting tests on patient samples to analyze and identify various substances or microorganisms

• Operating and maintaining laboratory equipment and instruments

• Preparing specimens for examination and recording test results

• Ensuring accuracy and precision in all laboratory procedures

• Collaborating with healthcare professionals to i...read more

Phosphorus is critical for many cellular functions, including energy production, DNA synthesis, and bone formation.

• Phosphorus is an essential mineral that is found in every cell in the body.

• It plays a key role in energy production, helping to convert food into usable energy.

• Phosphorus is also important for DNA synthesis and repair, as well as for bone formation and maintenance.

• Low levels of phosphorus can lead to a range of symptoms, including muscle weakness, fatigue, and bo...read more

Complete LFT parameter refers to a comprehensive set of liver function tests that assess the overall health and function of the liver.

• Complete LFT parameter includes tests such as ALT, AST, ALP, bilirubin, albumin, and total protein.

• These tests help in diagnosing liver diseases, monitoring liver function, and evaluating the effectiveness of treatment.

• Abnormal results in LFT parameters can indicate liver damage, hepatitis, cirrhosis, or other liver disorders.

• For example, eleva...read more

Sieve analysis is a method used to determine the particle size distribution of a granular material.

• Sieve analysis involves passing a sample through a series of sieves with progressively smaller openings.

• The amount of material retained on each sieve is weighed and used to calculate the percentage of material in each size fraction.

• The results of a sieve analysis are typically presented in a graph or table showing the particle size distribution.

• Sieve analysis is commonly used in...read more

Fluoride tubes are used for glucose blood tests because they contain sodium fluoride, which prevents blood from clotting and preserves glucose levels.

• Fluoride inhibits glycolysis in blood samples, preventing glucose breakdown

• Prevents blood from clotting, ensuring accurate glucose levels

• Sodium fluoride is a common preservative used in blood collection tubes

The normal value of serum creatinine is approximately 0.6 to 1.2 milligrams per deciliter (mg/dL) in adult males and 0.5 to 1.1 mg/dL in adult females.

• Normal range for serum creatinine in adult males is 0.6-1.2 mg/dL

• Normal range for serum creatinine in adult females is 0.5-1.1 mg/dL

• Serum creatinine levels can vary based on age, gender, muscle mass, and other factors

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

Yes, I can demonstrate an experiment.

• I will need to know which experiment you would like me to demonstrate.

• I can prepare the necessary materials and equipment beforehand.

• I will explain the procedure and the expected results before starting the experiment.

• I will follow safety protocols and dispose of any waste properly.

• I can answer any questions you may have during or after the demonstration.

I have experience handling various machines in the lab, including those used for biochemistry parameters and CBC reports. I am also familiar with Quality Control (QC) processes.

• Handled machines for biochemistry parameters such as spectrophotometers, chromatographs, and immunoassay analyzers

• Interpreted CBC reports including parameters like white blood cell count, red blood cell count, hemoglobin levels, and platelet count

• Understand Quality Control (QC) procedures to ensure acc...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

The color of the paint peelup on the material.

• The color of the paint peelup can provide information about the type of coating used.

• Different colors may indicate different chemical compositions or additives in the coating.

• For example, a red peelup may suggest the presence of iron oxide pigments in the coating.

• Analyzing the color can help in identifying the cause of the peelup, such as improper adhesion or degradation.

• Color matching techniques can be used to compare the peelup ...read more

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

K. F. T test is a laboratory test used to measure the water content in a substance.

• K. F. T stands for Karl Fischer Titration.

• It is commonly used in chemistry and pharmaceutical industries.

• The test is based on the reaction between water and iodine in the presence of sulfur dioxide.

• It is used to determine the water content in various substances such as chemicals, solvents, and pharmaceutical products.

• The test involves adding a reagent containing iodine and sulfur dioxide to the...read more

Sodium citrate test is used to measure the citrate concentration in blood, which is important for monitoring coagulation disorders.

• Sodium citrate is used as an anticoagulant in blood collection tubes to prevent clotting.

• It is commonly used in coagulation tests like PT (prothrombin time) and APTT (activated partial thromboplastin time).

• The test helps in diagnosing and monitoring conditions like hemophilia, liver disease, and vitamin K deficiency.

There are four main blood groups in the human body: A, B, AB, and O.

• Blood group A: has A antigens on red blood cells

• Blood group B: has B antigens on red blood cells

• Blood group AB: has both A and B antigens on red blood cells

• Blood group O: has no antigens on red blood cells

Chemical examination in urinalysis involves testing for various substances such as glucose, protein, ketones, and blood.

• Collect a urine sample from the patient.

• Perform a visual examination for color, clarity, and odor.

• Use chemical reagents to test for glucose, protein, ketones, blood, pH, and specific gravity.

• Interpret the results based on color changes or precipitation.

• Compare the results to reference ranges to determine abnormalities.

• Examples of abnormal findings include pr...read more

Reinforced concrete is a composite material made of concrete and reinforcement steel bars.

• Reinforcement steel bars are embedded in the concrete to provide tensile strength

• The combination of concrete and steel creates a material that is strong in both compression and tension

• Reinforced concrete is commonly used in construction for buildings, bridges, and other structures

• The thickness and spacing of the reinforcement bars can be adjusted to meet specific strength requirements

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

QC & Calibration are essential processes in ensuring accuracy and reliability of lab equipment and test results.

• Quality Control (QC) involves monitoring and maintaining the quality of processes and products to ensure consistency and accuracy.

• Calibration is the process of adjusting and verifying the accuracy of equipment by comparing it to a known standard.

• Regular QC checks help identify and correct errors or deviations in testing procedures or equipment.

• Calibration ensures th...read more

NH2 group can be extracted using a suitable solvent and acid-base extraction techniques.

• Use a solvent that can selectively dissolve the molecule with NH2 group, such as ether or dichloromethane.

• Perform acid-base extraction by adjusting the pH of the solution to protonate or deprotonate the NH2 group for extraction.

• Utilize techniques like liquid-liquid extraction or solid-phase extraction for efficient separation of the molecule with NH2 group.

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

ODU fan RPM can be checked using a tachometer or a multimeter.

• Connect the tachometer or multimeter to the fan's power source

• Set the tachometer or multimeter to measure RPM

• Turn on the fan and record the RPM reading

• Compare the recorded RPM with the manufacturer's specifications

Cansar markar test is a diagnostic test used to detect cancer cells in the body.

• Cansar markar test is a blood test that detects cancer cells by measuring the levels of certain proteins in the blood.

• It is used to diagnose various types of cancer, including lung, breast, ovarian, and pancreatic cancer.

• The test is not 100% accurate and may produce false positive or false negative results.

• It is often used in combination with other diagnostic tests, such as imaging tests and biops...read more

Hb can be taken using a purple top tube containing EDTA anticoagulant.

• Hb stands for Hemoglobin, which is a protein found in red blood cells.

• EDTA anticoagulant helps prevent the blood from clotting.

• Purple top tube is also known as an EDTA tube.

• Other tubes used for blood collection include red top, green top, and gray top tubes.

• Proper labeling of the tube is important to avoid errors in testing and diagnosis.

Controls and calibrations are run to ensure accuracy and precision of lab equipment.

• Perform daily checks on equipment to ensure proper functioning

• Run control samples to ensure accuracy of results

• Calibrate equipment regularly to maintain precision

• Document all control and calibration results for future reference

• Follow manufacturer's instructions for control and calibration procedures

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

EDTA full form is Ethylenediaminetetraacetic acid.

• EDTA is a chelating agent used in laboratories to bind metal ions.

• It is commonly used in blood collection tubes to prevent clotting.

• It is also used in molecular biology techniques like DNA extraction.

• The full chemical name is Ethylenediaminetetraacetic acid.

Quality control is imposed to ensure products meet standards, prevent defects, and maintain customer satisfaction.

• Ensures products meet standards and specifications

• Prevents defects and errors in products

• Maintains customer satisfaction and trust

• Identifies and corrects issues early in the production process

• Reduces waste and rework

• Complies with regulations and industry standards

• Improves overall product quality and reliability

The normal value of creatine in the blood is typically between 0.6 to 1.2 milligrams per deciliter (mg/dL).

• Normal creatine levels in the blood range from 0.6 to 1.2 mg/dL

• Creatine levels can vary based on factors such as age, gender, and muscle mass

• Abnormal creatine levels may indicate kidney or muscle issues

The pH value of human blood is approximately 7.4.

• The pH value of human blood is tightly regulated around 7.4.

• A pH value below 7 indicates acidity, while a pH value above 7 indicates alkalinity.

• Changes in blood pH can have serious health consequences.

• Normal arterial blood pH ranges from 7.35 to 7.45.

Maintaining lab temperature is crucial for accurate results and sample integrity.

• Regularly calibrate temperature monitoring devices

• Keep lab doors closed to prevent temperature fluctuations

• Store samples in appropriate temperature-controlled environments

• Monitor and record temperature levels regularly

• Implement emergency protocols for temperature deviations

Fertility test apps help individuals track their menstrual cycles, ovulation, and fertility windows.

• Fertility test apps help users monitor their menstrual cycles to predict ovulation.

• They provide information on fertile windows for conception.

• Some apps allow users to input additional data like basal body temperature and cervical mucus consistency.

• Users can receive reminders for ovulation testing or intercourse during peak fertility.

• Popular fertility test apps include Glow, Clu...read more

As a lab technician, I perform a variety of tests depending on the needs of the lab.

• The number of tests I perform varies depending on the lab's workload and priorities

• I am trained to perform a wide range of tests, including chemical, biological, and physical tests

• Examples of tests I may perform include blood tests, urine tests, microbiology tests, and environmental tests

• I follow strict protocols and procedures to ensure accurate and reliable results

• I also maintain and calibra...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

IT field offers more opportunities and growth potential compared to ECE.

• IT field is constantly evolving and offers a wide range of career options

• IT professionals are in high demand across industries

• IT field offers better salary and growth prospects compared to ECE

• ECE field is limited to certain industries like electronics and telecommunications

• IT field has more scope for innovation and creativity

There are four types of hemoglobin: oxy, carboxy, met, and sulfhemoglobin.

• Oxyhemoglobin is formed when oxygen binds to hemoglobin in the lungs.

• Carboxyhemoglobin is formed when carbon monoxide binds to hemoglobin, which can be toxic.

• Methemoglobin is formed when iron in hemoglobin is oxidized, making it unable to bind to oxygen.

• Sulfhemoglobin is formed when sulfur binds to hemoglobin, which can cause a decrease in oxygen transport.

The study of blood is known as heamatology, which involves analyzing blood cells, blood proteins, and blood clotting mechanisms.

• Heamatology involves analyzing the composition of blood cells.

• It also includes studying blood proteins and their functions.

• The study of blood clotting mechanisms is an important aspect of heamatology.

• Heamatology is essential for diagnosing and monitoring various blood disorders and diseases.

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

Bombay blood group is a rare blood type where individuals lack the H antigen on their red blood cells.

• Bombay blood group is also known as hh blood group.

• Individuals with Bombay blood group can only receive blood from other individuals with the same blood type.

• It is important for individuals with Bombay blood group to carry a medical alert card in case of emergencies.

Normal range of hemoglobin is typically between 12 to 16 grams per deciliter for women and 14 to 18 grams per deciliter for men.

• Normal range for women: 12-16 g/dL

• Normal range for men: 14-18 g/dL

• Hemoglobin levels can vary based on factors such as age, sex, and altitude

• Low hemoglobin levels may indicate anemia, while high levels may indicate dehydration or other conditions

The window period of HIV is the time between initial infection and when the virus can be detected by a test.

• The window period for HIV can vary, but is typically between 2-12 weeks after infection.

• During the window period, a person may have HIV but test negative because their body has not yet produced enough antibodies for detection.

• It is important to wait for the window period to pass before getting tested for HIV to ensure accurate results.

• Early detection of HIV is crucial f...read more

There are three types of Slump Test: True Slump Test, Shear Slump Test, and Collapse Slump Test.

• True Slump Test measures the consistency of concrete.

• Shear Slump Test measures the stability of concrete.

• Collapse Slump Test measures the water content of concrete.

• All three tests are important in determining the quality of concrete.

• The tests are conducted by filling a slump cone with concrete and measuring the slump of the concrete after the cone is removed.

ELISA stands for Enzyme-Linked Immunosorbent Assay, a common laboratory technique used to detect the presence of antibodies or antigens in a sample.

• ELISA is a widely used technique in immunology and biochemistry

• It involves the use of an enzyme-linked antibody to detect a specific protein in a sample

• ELISA can be used for various purposes such as diagnosing infections, allergies, and autoimmune diseases

Checking in the lab is important to ensure accuracy, quality control, and safety of experiments and results.

• To ensure accuracy of experiments and results

• To maintain quality control standards

• To ensure safety of lab personnel and environment