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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, capillary, or venous blood

 

Preferred:

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. Use gauze or tissue to absorb the excess blood. Cap syringe and mix by rolling syringe between palms for 15 seconds. Immediately transport to laboratory.

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

2. Indicate arterial or venous blood on request form.

3. Label syringe with patient’s name (first and last), date and actual time of draw, and type of specimen (arterial or venous blood).

 

Alternate:

VACUTAINER®

Draw a full, green-top (heparin) tube. Mix by gently inverting 8 times. Immediately transport to laboratory.

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

2. Indicate arterial or venous blood on request form. 

3. Label tube with patient’s name (first and last), date and actual time of draw, and type of specimen (arterial or venous blood).

 

Capillary Tube

Collect blood in a heparinized capillary tube. Tube must be full. Mix by rolling capillary tube between palms for 15 seconds. Immediately transport to laboratory.

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

2. Indicate capillary blood on request form.

3. Label tube with patient’s name (first and last), date and actual time of draw, and type of specimen (capillary blood).

Specimen Transport Temperature

Refrigerate/Ambient NO/Frozen NO

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:  <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

<2% of total Hgb

Toxic:  >2% of total Hgb

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82810