Drucker Diagnostics Paralens Advance - Manual (Page 52)

Test Procedures for Appendix A-1
QBC Venous and Capillary Tubes
A-1.1 MATERIALS PROVIDED
The QBC Autoread Plus Hematology System
consists of the following instruments and
accessories with which to perform hematology
tests:
• QBC Autoread Plus Analyzer with software
cartridge
• QBC Power Pack
• QBC Capillary Centrifuge
• Printer
• Calibration Check Rod
• Workstation
• Forceps
• QBC Pipetter
A-1.2 MATERIALS REQUIRED BUT NOT
PROVIDED
A-1.2.1 QBC Tubes for Hematology Tests
The following disposables are available for QBC
Hematology tests:
• QBC Venous Tubes
100 Tests 424240
1000 Tests 424237
• QBC Capillary Tubes
100 Tests 424241
1000 Tests 424238
A-1.3 HEMATOLOGY TEST PROCEDURES
• Be sure QBC blood tubes have not exceeded
their labeled expiration date or open vial
stability.
• Maintain laboratory temperature at 68° to 90°F
(20° to 32°C).
• Venous blood: specimen must be well-mixed
and at room temperature. For a valid platelet
count, blood must be less than 90 minutes old.
• Capillary blood: collect only from free-flowing
finger puncture or plantar surface of heel in
infants less than one year old.
Interfering Substances
• Hemolysis: Do not perform tests on visibly
hemolyzed blood specimens.
• Bilirubin: No effects on test results have been
observed at bilirubin concentrations up to
8.5 mg/dL.
9
• Coumadin: Anticoagulant therapy has been
shown to have no clinically significant effect on
performance.
9
• Doxorubicin: Treatment with the anthracyclic
drug Doxorubicin does not appear to interfere
with the QBC test method.
9
• Drugs: The effects of other potentially interfering
drugs and their metabolites on QBC tests have
not been established.
10,11
Specimen Storage and Stability
After collection, anticoagulated venous blood may
be held in the collection tube at room temperature
68° to 90°F (20° to 32°C) for the times indicated
below.
• Up to 90 minutes from blood collection,
provided all parameters – including the platelet
count – are required. Specimens more than 90
minutes old may yield falsely elevated platelet
counts. (Note: After centrifugation, QBC Tubes
may be tested up to 4 hours later.)
• Up to 4 hours from blood collection, provided
all parameters – except the platelet count – are
required. (Note: After centrifugation, QBC tubes
may be tested up to 4 hours later.)
Filled QBC capillary-blood tubes should be mixed
and centrifuged promptly after blood collection.
A-1-1
WARNING
Blood specimens may contain the Hepatitis B
Virus (HBV), Hepatitis C Virus (HCV), Human
Immuno deficiency Virus (HIV), or other disease-
causing agents. Handle all patient specimens
as potential biohazards capable of transmitting
infection. Wear appropriate personal protective
equipment, including gloves, when collecting
and processing blood.