Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  


Sunquest Test Code:
RBCFR      Geisinger Epic Procedure Code: 85557.02         Geisinger Epic ID: 24081

Specimen type:
Whole blood
Preferred collection container:
Specimen required:
5 mL sodium heparin whole blood; minimum 3 mL.
Special notes:
Specimen must be collected Monday through Wednesday and received in Referred Testing the same day it is collected no later than 2 p.m.

Specimen processing instructions:
Ship specimen same day as collection. Do not spin. 
Transport temperature:
Specimen stability:
Room temperature: 48 hours. Refrigerated: 72 hours. Frozen: Unacceptable.
Rejection criteria:
Stability limits exceeded. Frozen specimen unacceptable. Unacceptable if spun.

Reference interval:
0.85% NaCl 0%
0.65% NaCl 0-19%
0.60% NaCl 0-40%
0.55% NaCl 5-70%
0.50% NaCl 36-88%
0.45% NaCl 54-96%
0.40% NaCl 65-100%
0.35% NaCl 72-100%
0.30% NaCl 80-100%
N=Patient exhibits a normal RBC fragility pattern.
CPT code(s):
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
RBC fragility.
Spectrophotometric (Colorimetric)
RBC Fragility; Red Cell Fragility
Quest test code 139731
Clinical significance:
Osmotic (RBC) Fragility is used to assess disorders of the erythrocyte membrane. Increased osmotic fragility is found in hereditary spherocytosis, other RBC membrane disorders, and in idiopathic acquired hemolytic anemias. Diminished fragility is seen in conditions in which target cells are found.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Monday-Sunday, all shifts    
Performed stat? No
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