cobas e 411 review Day 1

Which parameters do you adjust with two known concentrations and the

corresponding signals using the Rodbard function?

• b and d

• x and b

• a and d

Which of the following expressions relates best to large molecular weight

antibodies?

• TPA

• 42 second cycle

• CleanCell

• Anti-HBc IgM

• Pre-treatment test

After ECL reaction the remaining reaction mix is washed out with…

• PreClean M

• CleanCell

• ProCell

Which parameters do you have to adjust using the Linear reciprocal

calibration function?

x = (1-ay)/by

• The slope b and the y-intercept a

• The slope b and the x-intercept a

• The slope a and the x-intercept b

What kind of functions are used for the calculation of the interrelationship

between the integral light signal and the concentration of antigen in the

sample?

• Three point calibration functions

• Rodbard function or linear reciprocal functions are used

• Linear cut-off value calculation

Which of the following statements are true?

Choose all that apply

• PC with touch screen and without external keyboard

• cobas host protocol does not upload the results of Calc tests

• A protection cover is located on the sipper and pipetter area

• Up to 15 reagent packs can be placed into the reagent rotor

• Solid waste tray cannot be replaced during the run without causing a run abord

Which of the following statements are true?

Choose all that apply.

• In daily routine QC's are used to monitor the accuracy and precision of the tests

• If a target value of calibrator is entered manually, this value is valid until a new lot is installed

• The target values of the controls have to be recovered within a defined range

• There is one basic reason to perform QC measurements: QC Violation

What does ECL stand for?

• Electrically critical luminescent reaction

• ElectroChemiluminescence reaction

• Enhanced chemiluminescent reaction

Which expression describes the lot calibration?

• Valid for all other reagent packs of the same lot

• Calibration factor

• 28 days

• Minimum/maximum signal

• More than 24 hours

Which expression describes the reagent pack calibration?

• Valid for all other reagent packs of the same lot

• Calibration factor

• 28 days

• Minimum/maximum signal

• More than 24 hours