Drucker Diagnostics Paralens Advance - Manual (Page 35)

4-12
ERROR MESSAGE CAUSE AND ACTION
*Error Locating
Meniscus
• Cause: Improper tube inserted, defective lamp, or binding carriage.
Action: Remove tube and inspect. Retest or prepare and test new tube.
If message persists, request service.
*Improper Fill
Venous Sample
• Cause: Venous tube not filled with required amount of blood or some sample was lost during
tube preparation.
Action: Check pipetter for accuracy of fill. Prepare and test new tube.
*Improper Fill
Capillary Sample
• Cause: Capillary tube not filled with required amount of blood or some sample was lost dur-
ing tube preparation.
Action: Prepare and test new tube.
*Improper Fill AccuTube
Sample
• Cause: AccuTube not filled with required amount of blood or some sample was lost during
tube preparation.
Action: Verify AccuTube spacer in place if using pipetter. Prepare and test new tube.
Too Many Bubbles
Found in Tube
• Cause: Plasma contains excess bubbles, making accurate measurement of plasma column
difficult.
Action: Prepare and test new tube.
*Granulocytes
Unreadable (1)
Also #2, #3, #4, #5 & #6
•
Cause: Errors (1) and (2): Sample has blurred red cell-granulocyte interface. Errors (3-5):
Sample has severely blurred red cell-granulocyte interface.
Action: Instrument will not report GRANS, WBC, or % LYMPH/MONOS, but will report
LYMPH/MONO (10 9 /L), PLT, HCT, HB, and MCHC. For full test panel, test fresh sample or
use other test method.
*Buffy Coat Unreadable
(2)
•
Cause: Pancytopenia, resulting in extremely small, hard-to-read cell layers.
Action: Inspect tube for small layers; if capillary sample, obtain and test venous sample.
Cause: Various leukemias result in extremely large layers of certain white cells which obscure
other small cell layers (e.g., lymphocytes).
Action: Inspect tube for large layers; if venous sample, obtain and test capillary sample.
*Buffy Coat Unreadable
(3)
• Cause: Top of platelet layer is near or at top of float, caused by extremely large layer of plate-
lets, lymph/monos, or granulocytes.
Action: Inspect tube for large layers; if venous sample, obtain and test capillary sample.
*Buffy Coat Unreadable
(4)
• Cause: Platelets clumped on top of float, possibly due to poor blood collection technique or
to age of blood sample.
Action: Obtain a fresh sample and retest.
*Buffy Coat Unreadable
(5)
•
Cause: Lymph/Mono layer is extremely small or is inadequately stained.
Action: Retest or prepare and test new tube.
*Buffy Coat Unreadable
(6)
• Cause: analyzer fails to find 4 out of the 8 scans of the float that yield reproducible cell
counts, possibly due to expired QBC tube or incorrect sample preparation.
Action: Retest or prepare and test new tube.
DURING STARTUP AND SELF-TEST
DURING CALIBRATION CHECK
DURING HEMATOLOGY TESTS*
*Patient, Proficiency and Control Samples
Table 4-3 (continued)
Error Messages and Codes