Retic Noise Origin (Rtc-No, No) - Siemens ADVIA 2120 Operator's Manual

4. Check sheath delivery.
5. Check the pressure and vacuum readings.
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 Baso Rate Retic Rate

Retic Noise Origin (RTC-NO, NO)

Definition
The Retic Noise Origin flag is triggered if more than 10% of the gated cell
signals come from the Noise Origin area of the RETIC Scatter Absorption
cytogram.
The Origin Noise area of the Retic Scatter Abs cytogram is located in absorption
channels 1 through 3.
Typically, an excessive number of events detected in this area is due to
unsphered cells or improperly set gains.
Normal Retic Scatter
Abs Cytogram
1 Noise Origin area
Results Flagged
%RETIC, #RETIC, CHg, CHr, CHCMg, CHCMr, CHDWr, CHDWg, MCVg,
MCVr, RDWg, RDWr
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.
6-46 Flags