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Test Code LAB90438 Oximetry, Measured Blood, Arterial

Additional Codes

46731

Reporting Title

Oximetry

Methodology

Radiometer  Analyzer

Performing Laboratory

OhioHealth Laboratory Services-GMC, DH, DHM, HMH Respiratory Department  RMH, MGH Core Laboratory

Specimen Requirements

Submit only 1 of the following specimens:

Acceptable Specimens:

 Arterial blood

Heparinized Syringe

Draw 2 mL of blood in a 3-mL heparinized syringe or a minimum of 0.5 mL of blood in a 1-mL heparinized syringe. Expel any air bubbles. Cap syringe and mix by rolling syringe between palms for 15 seconds.

Also acceptable:

VACUTAINER®

Draw a full,dark green-top (heparin) tube. Gel tube is not acceptable.  Mix by gently inverting 8 times. Test is performed on whole blood do not centrifuge.

Avoid exposure to atmosphere

 

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood Refrigerated 14 days capped specimen
  Ambient  14 days capped specimen

Note:  1. Methylene blue strongly interferes with methemoglobin, total hemoglobin, and oxyhemoglobin. Sulfhemoglobin interferes with carboxyhemoglobin and methemoglobin.ethylene blue strongly interferes with methemoglobin, total hemoglobin, and oxyhemoglobin. Sulfhemoglobin interferes with carboxyhemoglobin and methemoglobin.

 

Specimen Transport Temperature

Refrigerate/Ambient

Reference Values

TOTAL HEMOGLOBIN

Newborn:  14.0-24.0 g/dL

Adults

Males:  13.5-18.0 g/dL

Females:  12.0-16.0 g/dL

OXYGEN SATURATION (MEASURED)

Adults (arterial):  92-99%

OXYHEMOGLOBIN

Arterial:  94-100% of total Hgb

CARBOXYHEMOGLOBIN

Suburban nonsmokers:  0.0-1.5% of total Hgb

Smokers:  1.5-5.0% of total Hgb

Heavy smokers:  5.0-9.0% of total Hgb

Critical value

Red category conditions complete alert within 1 hour (initial result only):  >5.0%

Toxic:  ≥20% of total Hgb

METHEMOGLOBIN

0.0-2% of total Hgb

Toxic:  >2% of total Hgb

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82810