Oxygen Dissociation (P50) by Hemoximetry
2002984
Ordering Recommendation
A simultaneously drawn control specimen must be submitted to allow for meaningful interpretation. Effective screening test for hemoglobin variants with high- and low-oxygen affinities.
Mnemonic
HEMOX
Methodology
Spectrophotometry/Clark Electrode
Performed
Mon-Fri
Reported
1-3 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Time SensitiveTime Sensitive

Specimen Required
Patient Preparation
A control specimen needs to be sent with the patient specimen. The control specimen needs to be drawn from a healthy, non-smoking, individual who is not biologically related to the patient.  
Collect
Lavender (EDTA) (patient) AND lavender (EDTA) (control). Collect control specimen within 30 minutes of patient specimen and keep specimens together at all times.  
Specimen Preparation
Refrigerate immediately after collection. Transport 5 mL whole blood (patient) AND 5 mL whole blood (control). (Min: 1 mL (patient) AND 1 mL (control)) Label the control tube as "Control for [patient name]".  
Storage/Transport Temperature
Refrigerated. Send Sunday-Thursday only. Specimens should be received within 24 hours of collection. Ship patient and control specimens together.  
Unacceptable Conditions
Frozen or room temperature specimens. Specimens submitted without a control.  
Remarks
  
Stability
Ambient: Unacceptable; Refrigerate: 72 hours; Frozen: Unacceptable  
Reference Interval

Effective August 15, 2011

22-28 mmHg  
Interpretive Data
 
Note
If multiple patients are being drawn at one time, submitting one control for all patients is acceptable. Label control specimen as: "Control for (list all patient names)."
CPT Code(s)
82820
Components
Component Test Code*Component Chart Name
2002986Oxygen dissociation (P50)
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Hemoglobin Oxygen Affinity
  • HEMOGLOBIN,OXYGEN DISSOCIATION CURVE
  • O2 Affinity
  • Oxygen Affinity
  • Oxygen Dissociation P50, Erythrocytes
  • Oxyhemoglobin Dissociation
  • P50