Baso Irregular Flow Rate (Bifr, Br) - Siemens ADVIA 2120 Operator's Manual

System Related
1. Check baso reagents.
2. Check the baso reaction chamber temperature.
3. Check baso hydraulics.
4. Check baso gains
5. Check the RBC/Baso/Retic flowcell alignment.

Baso Irregular Flow Rate (BIFR, BR)

Definition
The Baso Irregular Flow Rate flag is triggered when the cell counting rate is
erratic because of a hydraulic disturbance in the baso channel.
Baso flow rate is evaluated in terms of the cell counting rate:
Flow Uniformity =
The flag is triggered if this value is greater than 2.5.
The BASO Rate Histogram displays the arrival rate of cells in the baso channel.
Normal BASO Rate Histogram
Results Flagged
WBC, WBCB, %BASO, #BASO
Corrective Action
1. Check baso reagents.
2. Check baso hydraulics.
3. Check sheath delivery.
A partially clogged RBC/baso/retic sheath filter can produce a distinctive "ski
slope" effect on the RBC, Baso, and Retic flow rate histograms. Replace the
sheath filter.
RBC Rate
6-26
Sum of the Squared Differences
9 x Mean Cell Counting Rate
BIFR BASO Rate Histogram
Baso Rate
Sample Related
•
High WBC Count
•
Leukemia
•
High Baso count
•
Aged Blood
•
Treated CLL
Retic Rate
Flags