ARUP's Laboratory Test Directory

Osmotic Fragility, Erythrocyte : 0049015

Mnemonic: OSM FRAG

Methodology: Spectrophotometry
Performed: Mon-Fri
Reported: 1-5 days
Specimen Required: Collect:  One 5 mL green (sodium or lithium heparin). 

Transport:  5 mL whole blood and two unfixed smears. Transport at 20-25°C. Send Sunday-Thursday only.

Pediatric Collection/Transport:  1 mL whole blood and two unfixed smears. Transport at 20-25°C.  Send Sunday-Thursday only.

Remarks:  Samples must be received within 24 hours of collection; testing must be performed within 48 hours of collection.

Unacceptable Conditions:  Hemolyzed blood.

Stability:  Ambient: 24 hours
Reference Interval:
Within normal curve limits. A graph will accompany laboratory report.
Interpretive Data: For patients with acute hemolysis, a normal red cell osmotic fragility test result cannot exclude an osmotic fragility abnormality since the osmotically labile cells may be hemolyzed and not present. Recommend testing during a state of prolonged homeostasis with stable hematocrit.
CPT Code(s): 85555
 
 

 

 

 
All ARUP Sites:        www.aruplab.com     ·     www.arupconsult.com     ·     www.arup.utah.edu     ·     www.childx.org     ·     www.utahblood.org