Art: 714374-00J Rev. Date: 25-Aug-11 12-9
TROUBLESHOOTING
Warning Message
Iftestingisdisabledduetowarningmessage,theconditionmustbecorrected
and the analyzer must be turned off and back on again before testing is enabled.
Message and
Quality Check Code
SeeTroubleshootingsection
*** Instead of Results
Starsappearinplaceofresultsiftheanalyzerdetectsthatthesensor’ssignalis
uncharacteristic.Sincethesensorcheckispartofthei-STATqualitysystem,
anoccassionalresultwillbeaggedduetoabadsensor.Othercausesofthis
flag are improperly stored cartridges or an interfering substance in the patients
sample, either extrinsic, such as the wrong anticoagulant, or intrinsic such as
medication.Also,agedsamplesmaycontainproductsofmetabolismthatcan
interfere with the tests.
• Ifthespecimen'sintegrityisnotinquestion,theresultsthatarenot
suppressed should be reported in the usual manner.
• Checkthesupplyofcartridgesinusewithacontrolsolution.
• Ifthecontrolisinrange,drawafreshsamplefromthepatientand
retest.
• If the stars appear in place of results again, there may be an
interfering substance. Refer to the Cartridge and Test Information
section for a list of interfering substances. Test the sample using
another method.
• If the control is out-of-range or if stars are displayed in place of
results, there may be a problem with the cartridge lot number. Use
another lot number or repeat the test using another method, and
contact your support representative. (Refer to Support Services
informationintheTechnicalBulletinsection.)
Unexpected Results
When results do not reflect the patient’s condition, repeat the test using a fresh
cartridgeandsample.Ifresultsarestillsuspect,testthelotofcartridgesinuse
withi-STATcontrolsolutions.Ifthecontrolsareinrange,theremaybean
interferingsubstanceinthesample.ChecktheCartridgeandTestInformation
sheets for the test in question. Test by another method to verify the result.
Ifthecontrolsareoutofrangetheremaybeaproblemwiththecartridgelot
number. Use another lot number or repeat the test using another method, and
contactyoursupportrepresentative.(RefertoSupportServicesinformationin
theTechnicalBulletinsection.)