Freelancer.com Interview Questions and Answers

Instrument installation involves setting up and configuring scientific equipment for accurate and reliable data collection.

• Ensure proper calibration and alignment of instruments

• Follow manufacturer's instructions for installation and maintenance

• Perform regular checks and quality control measures

• Train users on proper operation and safety protocols

• Examples: mass spectrometry, chromatography, microscopy

Lj rule is not applicable in control.

• Lj rule is used to determine whether a data point is an outlier or not.

• It is not used in control as it is a statistical tool for data analysis.

• Control charts are used in control to monitor and improve a process.

• Control charts use statistical process control (SPC) techniques to identify and correct process variations.

The pathology name of PCV is Polycythemia Vera.

• Polycythemia Vera is a rare blood disorder that causes the bone marrow to produce too many red blood cells.

• It is also known as primary polycythemia.

• Symptoms include fatigue, headache, dizziness, and shortness of breath.

• Treatment options include phlebotomy, medication, and radiation therapy.

Critical value is a statistical term used to determine if a test result is significant or not.

• Critical value is used in hypothesis testing to determine if the null hypothesis should be rejected or not.

• It is the value beyond which we reject the null hypothesis.

• For example, in a t-test, the critical value is determined by the degrees of freedom and the desired level of significance.

• If the calculated t-value is greater than the critical value, we reject the null hypothesis.

The Order of Draw refers to the sequence of blood collection tubes used during venipuncture.

• The order is important to prevent cross-contamination and inaccurate test results.

• The first tube should always be a sterile tube to prevent contamination.

• The last tube should be a tube with an anticoagulant to prevent clotting.

• The order may vary depending on the laboratory's protocol and the tests being performed.

• Example order: sterile tube, coagulation tube, serum tube, heparin tube, ...read more

The general blood picture refers to the overall analysis of blood components.

• The general blood picture includes the levels of red blood cells, white blood cells, and platelets.

• It also includes the hemoglobin and hematocrit levels.

• Abnormalities in the general blood picture can indicate various medical conditions such as anemia, infection, or leukemia.

Sample rejection criteria are standards used to determine whether a sample is acceptable for testing or not.

• Samples that are not properly labeled or identified

• Samples that are contaminated or degraded

• Samples that are insufficient in quantity or quality

• Samples that are outside the scope of the test

• Samples that are not submitted in the appropriate container or medium