Baso Saturation (B-Sat, Bs) - Siemens ADVIA 2120 Operator's Manual

Results Flagged
LI
Corrective Action
Multiple occurrences of this flag, especially for consecutive samples, can indicate
a system problem. However, isolated instances of this flag are usually sample
related.
The following list of sample-related causes may not contain all conditions that
could cause this flag. There is no intention to associate the flag with specific
diagnoses.
System Related
1. Check baso reagents.
2. Check baso hydraulics.
3. Check the baso reaction chamber
temperature.
4. Check sheath delivery.
5. Check RBC/Baso/Retic flowcell alignment.

Baso Saturation (B-SAT, BS)

Definition
The Baso Saturation flag is triggered if the number of events in the Saturation
area of the Baso cytogram is greater than 2.5% of the baso signals.
This flag is not triggered if WBCB and WBCP agree within specified limits (no
WBC-CE flag).
The Saturation area of the Baso cytogram is located to the right of the fixed
threshold at channel 46 above the upper MN/PMN threshold (1). This area can
contain air bubbles, unlysed cells, and cell clumps.
The B-SAT (BS) flag may cause a substitution of the WBC count.
Flags
Baso Cytogram
Sample Related
•
Aged blood
•
Absolute
lymphocytosis
•
Immature
granulocytes
•
Unsegmented
neutrophils (bands)
1 Baso Saturation area
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