Oxygen Dissociation P50, RBC
Label Mnemonic: OXDIS50
Epic Lab Code: LAB3777
Downtime Form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Commercial Mail-out Laboratory
5231 RCP
Specimen Instructions:
Need to draw "Normal Control" to send with specimen.

Include a control specimen drawn at the same time from a normal, unrelated, non-smoking individual: draw blood in a green-top (heparin) tube(s), and send 5.0 mL fresh heparinized whole blood to other containers. Label clearly on outermost label NORMAL CONTROL. Rubber band patient specimen and control vial together.

Note: Indicate patient's date of birth.
Collection Medium:
plus control
Green top tube 10 mL (Na Heparin) Hospital Stores #907693 Green top tube 10 mL (Na Heparin) Hospital Stores #907693
Preferred Minimum: 5.0 mL in a green-top tube
Absolute Minimum: 1.0 mL
Delivery Instructions:
Deliver to laboratory immediately after collection. SPECIMENS MUST ARRIVE AT REFERENCE LABORATORY WITHIN 72 HOURS OF DRAW.
Turn Around Time:
3 days upon receipt at reference laboratory
Reference Range:
> or =12 months: 24-30 mm Hg

Reference values have not been established for patients who are <12 months of age.
Interpretive Data:
Normal: p50=24 to 30 mm Hg (with sigmoidal oxygen dissociation curve)
Cautions: To ensure valid results, the specimen must be < or =72 hours old.

Useful For: Identifying hemoglobin variants associated with polycythemia or cyanotic and hypoxic disorders.
Hemox-Analyzer Measures and Plots O2 Saturation
CPT Code:
See Additional Information:
Specimens Requiring Immediate Delivery