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Test Code CO-OX Co-Oximetry, Blood

Performing Laboratory

NRL-Chemistry

Methodology

Includes hemoglobin, % O2 hemoglobin, % CO hemoglobin, % methemoglobin, and O2 content.

Note: Oximetry is available on a scheduled basis.

Specimen Requirements

Call NetworkReferenceLab Customer Service at 314-653-4455 prior to drawing specimen.

 

Specimen Type: Whole blood, arterial

Container/Tube: Dry, lithium heparinized syringe

Specimen Volume: 1 mL

Collection Instructions:

1. Expel air bubbles.

2. Remove needle from syringe and cap.

3. Immediately place on wet ice.

4. Label syringe with patient’s name (first and last), medical record number or date of birth, and date and actual time of draw.

Reference Values

HEMOGLOBIN
0-3 days: 14.5-22.5 g/dL

3 days-2 weeks: 12.5-20.5 g/dL

2 weeks-1 month: 10.0-18.0 g/dL

1-6 months: 9.0-14.0 g/dL

6 months-2 years: 10.5-13.5 g/dL

2-6 years: 11.5-13.5 g/dL

6-12 years: 11.5-15.5 g/dL

Alert values (automatic call-back): ≤7.0 g/dL

 

≥12 years - Males: 13.0-17.5 g/dL
≥12 years - Females: 11.9-15.5 g/dL
Alert values (automatic call-back): ≤6.5 g/dL


% O2 HEMOGLOBIN
90%-95%


% CO HEMOGLOBIN
0.0-2.9%

Alert value: ≥20%


% METHEMOGLOBIN
0.0%-1.9%

Alert value: ≥5%


O2 CONTENT
15-22% (volume % O2)

Day(s) Test Set Up

Monday through Sunday

Turnaround Time:

STAT-15 minutes

Routine-1 hour

Specimen Transport Temperature

Wet ice

Test Classification and CPT Coding

82375