Test Catalog

Test Id : VBGN2

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Venous Blood Gas without Coox, Blood

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Overview

Test Catalog

Useful For
Suggests clinical disorders or settings where the test may be helpful

Assessment of acid-base status in patients for whom arterial sampling is not indicated or would be difficult

Method Name
A short description of the method used to perform the test

Potentiometry/Amperometry

NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.

No

Reporting Name
Lists a shorter or abbreviated version of the Published Name for a test

Venous Blood Gas w/o Coox, B

Aliases
Lists additional common names for a test, as an aid in searching

Blood gas

VBG

Specimen Type
Describes the specimen type validated for testing

Whole Blood Li Heparin

Specimen Minimum Volume
Defines the amount of sample necessary to provide a clinically relevant result as determined by the testing laboratory. The minimum volume is sufficient for one attempt at testing.

0.5 mL

Reject Due To
Identifies specimen types and conditions that may cause the specimen to be rejected

No specimen should be rejected.

Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen Type Temperature Time Special Container
Whole Blood Li Heparin Ambient (preferred)
Refrigerated 1 hours

Useful For
Suggests clinical disorders or settings where the test may be helpful

Assessment of acid-base status in patients for whom arterial sampling is not indicated or would be difficult

Clinical Information
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test

pH, pCO2, and calculated bicarbonate can be used to assess acid-base status and gas exchange in the lungs (carbon dioxide retention). Assessment of oxygenation is best done with an arterial blood gas determination.

Reference Values
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

pO2

Not applicable

 

pCO2 [7]

41-51 mm Hg

 

pH [6]

7.32-7.43

 

Base Excess

Not applicable

 

HCO3

Not applicable

Interpretation
Provides information to assist in interpretation of the test results

Patient results vary depending on the underlying medical condition and the type of therapy being received. The following assessments should be made:

-Is carbon dioxide being retained?

-Is the acid-base status normal or is there evidence of a respiratory or metabolic acidosis or alkalosis?

Cautions
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances

Reference ranges for pCO2, bicarbonate, and base excess are for mixed venous blood. Specimens drawn from a peripheral vein will often have higher values.

Clinical Reference
Recommendations for in-depth reading of a clinical nature

1. Tobin MJ: Respiratory monitoring in the intensive care unit. Am Ref Respir Dis. 1988 Dec;138(6):1625-1642

2. McKane MH, Southorn PA, Santrach PJ, et al: Sending blood gas specimens through pressurized transport tube systems exaggerates the error in oxygen tension measurements created by the presence of air bubbles. Anesth Analg. 1995 Jul;81:179-182

3. Kraut JA, Madias NE: Approach to patients with acid-base disorders. Respir Care. 2001Apr;46(4):392-403

4. Malley MJ: Clinical Blood Gases Assessment and Intervention. 2nd ed. Elsevier Saunders; 2005

5. Ernst A, Zibrak JD: Carbon monoxide poisoning. N Eng J Med. 1998 Nov 26;339(22):1603-1608 doi: 10.1056/NEJM199811263392206

6. Burtis CA, Ashwood ER, Bruns DE, Sawyer BG, eds: Tietz Fundamentals of Clinical Chemistry. 6th ed. Elsevier Saunders; 2008

7.  Clarke W, eds: Contemporary Practices in Clinical Chemistry. 2nd ed. AACC Press; 2011

Method Description
Describes how the test is performed and provides a method-specific reference

From anticoagulated whole blood, the Radiometer ABL827 and Radiometer ABL90 analyzers make quantitative measurements of pH and the partial pressures of oxygen (pO2) and carbon dioxide (pCO2). The Radiometer ABL827 analyzer applies potentiometry in the pH, pCO2, and electrolyte electrodes, and amperometry for the pO2 electrode. Bicarbonate (HCO3) and whole blood base excess (BE) are then calculated from the measured values. The Radiometer ABL90 analyzer applies potentiometry to the pH and pCO2 sensors and an optical system to the pO2 sensor. HCO3 and whole blood BE are then calculated from the measured values.(Instruction manuals: Radiometer ABL800 FLEX, Radiometer Medical A/S, Denmark, Edition J, 6/2012; Radiometer ABL90 FLEX, Radiometer Medical A/S, Denmark, Edition G, 05/2013)

PDF Report
Indicates whether the report includes an additional document with charts, images or other enriched information

No

Day(s) Performed
Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.

Monday through Sunday

Report Available
The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.

Same day/1 day

Specimen Retention Time
Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

Not retained

Performing Laboratory Location
Indicates the location of the laboratory that performs the test

Eau Claire

Fees
Several factors determine the fee charged to perform a test. Contact your U.S. or International Regional Manager for information about establishing a fee schedule or to learn more about resources to optimize test selection.

  • Authorized users can sign in to Test Prices for detailed fee information.
  • Clients without access to Test Prices can contact Customer Service 24 hours a day, seven days a week.
  • Prospective clients should contact their account representative. For assistance, contact Customer Service.

Test Classification
Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR) product.

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information
Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Clinic Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.

CPT codes are provided by the performing laboratory.

82805

LOINC® Information
Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and results codes of this test. LOINC values are provided by the performing laboratory.

Test Id Test Order Name Order LOINC Value
VBGN2 Venous Blood Gas w/o Coox, B 24339-4
Result Id Test Result Name Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
VSITE Venous Sample Site 20506-2
PO2V Venous pO2 2705-2
PCO2V Venous pCO2 2021-4
BASEX Venous Base Excess 1927-3
HCO3B HCO3 14627-4
PHV1 Venous pH 2746-6

Test Setup Resources

Setup Files
Test setup information contains test file definition details to support order and result interfacing between Mayo Clinic Laboratories and your Laboratory Information System.

Excel | Pdf

Sample Reports
Normal and Abnormal sample reports are provided as references for report appearance.

Normal Reports | Abnormal Reports

SI Sample Reports
International System (SI) of Unit reports are provided for a limited number of tests. These reports are intended for international account use and are only available through MayoLINK accounts that have been defined to receive them.

SI Normal Reports | SI Abnormal Reports