Arkray AUTION MAX AX-4030, Operating Manual

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2-0
AX-4030
AUTION MAX AX-4030 OPERATING MANUAL
2.2.2 Handling Samples
TAKE THE UTMOST CARE WHEN HANDLING URINE. This instrument uses
urine as sample and as an ingredient of control solution. Urine may be
contaminated by pathogenic microbes that can cause infectious diseases.
Improper handling of urine may cause infection to the user or other
individuals by pathogenic microbes.
Discard used samples, parts and liquid waste in accordance with local
regulations for biohazardous waste.
■ Samples must be fresh urine collected within an hour.
If samples cannot be measured within an hour, seal and keep them refrigerated. Leaving samples at
room temperature for 2 hours or more may alter chemical composition of the samples. Refrigerated
samples must be brought to the measurement environment temperature before testing.
■ Mix each sample well before measurement. Do not centrifuge samples.
Centrifuging may cause blood cells to precipitate, whereby producing incorrect results for some
measurement items.
■ Remove bubbles and a film from the surface of the sample with tissue paper, etc.
The liquid level of the sample cannot be correctly detected if covered in bubbles and a film. If it
is, the instrument cannot aspirate the volume of sample required for measurement, thus producing
incorrect results.
■ Use samples as collected.
Do not add preservative, disinfectant, or detergent.
■ Do not place samples where exposed to direct sunlight.
Direct sunlight can alter the quality of samples, whereby producing incorrect results.
■ Hematuria and dense turbid urine may affect S.G. and color-tone measurements.
Measuring hematuria contaminates the S.G. cell, consequently producing incorrect results. The
actual color of the macroscopic hematuria (about 10,000 red blood cells/μL) may not correspond
with the result determined by the instrument. Measurement of dense turbid urine may produce
incorrect S.G. results.
■ Samples containing ascorbic acid can affect measurement results.
Measuring samples with ascorbic acid can produce lower glucose and occult blood values than
actual levels.
■ Drug-administered urine and visual hematuria can affect measurement results.
Measurements of drug-administered urine and visual hematuria can produce incorrect results. The
instrument alerts you to the error by adding a “!” sign on the displayed and printed reports.