Clinical Chemistry - QA-QC and Instrumentation Online Test

Which of the following is NOT a pre-analytic variable?

What would be primarily affected when a sample is analyzed by diffent people?

When the sum of all values is taken and it is divided to the number of samples tested, what is being calculated?

In the Clinical laboratory, to calculate for the standard deviation, a lab must establish how control runs?(minimum)

The following Values are taken from a control run for a new glucose analyzer, assuming that the confidence limit for the control is +/-5mg/dl from the mean of 90mg/dl, what conclusion would be made from the analyses done?

a) 90mg/dl


c) 89.6mg/dl



If a standard analytical method is to be replaced by a more SENSITIVE method it should be able to?

a)Detect the analyte in a smaller quantity than that of the standard

b)Detect the analyte in a different samples

c)Test positive if the analyte is present in other samples than the sample normally used in the standard method

d)Test negative if the analyte is not present in sample

This is the ability of an analytical method measure only the analyte of interest even in the presence of interfering substances

Which is NOT a property of a standard?

When you compare past rsults from previous result what are you doing?

What is used by T-test to compare the values in sets of sample population to determine accuracy?

An F-test compare what quality of two given analytical methods?

This is used in conjuction with Levey-Jenning's Chart

Beer's Law is one of the priniciple followed by which analytical technique?

Which of the following would be the most common source of error in using Spectrophotometry?

This is considered as the gold standard for drug/toxicologic analyses

Valinomycin is a constituent of what type of Ion-Selective-Electrode?

Which Electrochemistry technique is based on the principle of titration?

In electrophoresis the migration of particles is affected by all EXCEPT?

Which of the following CANNOT be measured by electrophoresis?

Which is method may be used in the colligative properties of a substance?


The test tackles on the basics of all clinical laboratory work from pre- analytic to post- analytic. some basic instrumentation questions are also included in the test.

Instrumentation topics:
Electrochemical analysis



how to solve this one please help

1. To 2.0 mL of a glucose solution, is added 1.0 mL of a solution containing excess ATP, NADP+, MgCl2, hexokinase and glucose-6-phosphate dehydrogenase. The change of absorbance of the final solution (in a 1 cm cuvette) relative to the blank reading was 0.91 at 340 nm. The molar absorptivity of NADPH is 6.22 x 103See more

687 days 1 hours 36 minutes ago

Test: 1

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