Test directory: Osmotic Fragility, RBC

Ordering Code 6181
Test Name Osmotic Fragility, RBC
Preferred Specimen Whole Blood and 2 Unfixed Smears
Preferred Container Lithium Heparin (Green)
Other Specimen/Container Whole Blood in EDTA, K2 (Lavender), Whole Blood in Lithium
Heparin (Green), Whole Blood in Sodium Heparin (Green)
Optimum Volume 5 mL and 2 unfixed smears.
Handling Instructions Whole Blood specimen MUST be refrigerated within 30 minutes of collection.
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
Specimen Stability Ambient: Not Stable
Refrigerated: 72 Hours
Frozen: Not Stable
Specimen(s) MUST be received at reference laboratory within 48 hours of collection.
Rejection Criteria Ambient, Frozen, Grossly hemolyzed
Avail. Stat NO
Analytic Time Up to 1 Day
Methodology Spectrophotometry
Reference Lab  ARUP Laboratories

Reference range(s)

The reference ranges listed below are valid on this date of June 29, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Osmotic Fragility, RBC ALL See report.