AU680

Question 1

Used to process priority stat samples and the fastest way to process a sample.

Answer 1

STAT table

Question 2

the sample probe/liquid level detector dispenses samples and or diluent, and detects liquid level. Sample is aspirated from the tube/cup and dispensed into the cuvette wheel

Answer 2

Sample transfer unit

Question 3

Two reagents probe/liquid level detectors dispense reagent and or diluent, and detect liquid level. The probe assemblies are designed for up and down collision detection. Reagent is aspirated from R1 and R2 compartment and dispensed into the cuvette wheel.

Answer 3

Reagent transfer unit

Question 4

Mix bars used to mix the reagent and sample in the cuvette

Answer 4

Mixing unit

Question 5

Consist of a halogen lamp, lenses, a diffraction grafting, and a photodetector to measure the amount of light transmitted through the reaction solution in the cuvette

Answer 5

Photometry unit

Question 6

Cleans, rinses, and dries the cuvettes automatically

Answer 6

wash nozzle unit

Question 7

Define ISE unit

Answer 7

Diluted samples is passed through sodium, potassium, and chloride ion selective electrode to determine the concentration by comparing the electrical potential different to the reference electrode.

Question 8

The screen to check system messages relating to sample status and analyzer status.

Answer 8

Home outline

Question 9

Check analyzer status menu: Blue

Answer 9

no error

Question 10

Check analyzer status menu: yellow or orange

Answer 10

non fatal error. the analyzer can be started

Question 11

Check analyzer status menu: Red

Answer 11

Fatal error. The analyzer can’t be started

Question 12

3 important sample requirements for the instrument to sample correctly.

Answer 12

• should not contain fibrous material or fibrin, except for WB.
• No air bubbles
• Dispense sample volume in the quantity required for analysis plus the dead volume

Question 13

Rack colors: white

Answer 13

used for analyzing routine samples

Question 14

Rack colors: Blue

Answer 14

used for calculation of reagent blanks for creation of calibration curves

Question 15

Rack colors- yellow

Answer 15

used for creating of calibration curves

Question 16

Rack colors- green

Answer 16

used for analysis of QC samples

Question 17

Rack colors- orange

Answer 17

used for manual repeat run analysis

Question 18

Rack colors- red

Answer 18

used for emergency sample analysis

Question 19

Daily variation chart for QC- green

Answer 19

normal data

Question 20

Daily variation chart for QC- yellow

Answer 20

data outside the range of the single check level programmed in QC specific

Question 21

Daily variation chart for QC- orange

Answer 21

abnormal data (data not included in the QC statistical values)

Question 22

What colors do the operator observe on the analyzer maintenance screen if the analyzer requires maintenance and what are the meanings of the colors?

Answer 22

Orange- over due
Yellow- expiring
The colors for daily maintenance appear 3 hours before the maintenance check.

Question 23

List 3 reasons that teh instrument may not be able to calculate a result

Answer 23

• mechanical error has occurred
• outside fo cuvette walls or the cuvette wheel is wet
• in the rate rxn, fewer than 3 photometric readings statisfy the assay creteria specified in teh specific test parameters

Question 24

List the first possible causes and corrective actiosn to be taken for the errors

Answer 24

sample can be severly lipemic, icteric, hemolytic or can contain excessively large amount of the analyte being tests.
dilute the sampel and run the test again.

Question 25

What phase of an enzymatic reaction has been reached if hte not enough data to determine linearity of reaction error message ahs displayed?

Answer 25

Reaction might go into substrate depletion due to a high concnetration or a problem with the condition of the reagent.

Question 26

What causes the reuslt (OD) is lower than the dynamic range error?

Answer 26

no concentration could be calculated. the OD fo the sample is lower than teh OD of the lwo limit of the dynamic range.

Question 27

What are three corrective actions for the errors in result (OD) is lower than the dynamic range error?

Answer 27

review the resul in the clinical context of the patient and repeat if necessary
check the reagent probes and reagent bottles for proper position
check the reagents for bubbles.

Question 28

what is the corrective action if the error result is higher than the dynamic range occurs?

Answer 28

Dilute the sample with the appropriate sample diluent and re-analyze
should be diluted so that they yield a value in the middle of the measuring range

Question 29

List 2 common causes of sample related problems with data

Answer 29

• sample evaportation causes unusally high resutls

- incorrect sample handling