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HelpEpic Test Code LAB79 Venous Blood Gas
Performing Location(s)
BMC,CRH,LFH,OCH,FTT,FOX
Specimen Type
Whole Blood: Venous, Mixed Venous
Collected by Phlebotomist or Nursing.
Specimen Tubes for Blood Gases
.
Preferred Container
Lithium Heparin coated syringe
Lithium Heparin Tube
Expel all air bubbles from syringe immediately after collection.
Alternate Container
Mint Green top tube (prefer Lithium Green top tube with no gel 4.0mL draw Lithium Heparin only when submitted to the Clinical Lab for Blood Gas, with lactate and/or basic metabolic panel unspun.
Minimum Volume to Submit for Testing
2 mL Whole blood
Causes for Rejection
Mislabeled or unlabeled specimen
Less than 95% draw for Vacutainer tubes
Specimen not received within 30 min of collection at room temp
Specimen delivered on ICE
Specimen contaminated with Room Air (bubbles in syringe or uncapped), Clotted or Centrifuged Pneumatic tube transport of Green top tubes or syringes
All other tubes or anticoagulant other than Lithium heparin whole blood
No Add-ons
Transportation Needs
Deliver ASAP within 15 minutes.
Do not send Green top tubes or syringes through pneumatic tube system.
Do not centrifuge.
Stable 30 minutes at RT.
Do Not Send on Ice
Includes
pH, PCO2, PO2, bicarbonate, Total CO2, Base Excess (or Deficit), O2 saturation, O2 content
Days of Analysis
All
Available STAT
Yes
Additional Information
Other Requirements:
Samples for blood gas analysis should be analyzed as soon as possible after collection.
Transport and storage on ice can artefactually increase pO2 results.
Reference Values
|
Analyte |
Units |
Population |
Venous |
|
pH |
(none) |
All |
7.350-7.450 |
|
pCO2 |
mmHg |
All |
40-50 |
|
pO2 |
mmHg |
All |
29-49 |
|
HCO3 |
mmol/L |
All |
22-29 |
|
TCO2 |
mmol/L |
All |
22-34 |
|
O2 Saturation |
% |
All |
60-85 |
|
Base Excess |
mmol/L |
All |
(-2)-(+3) |
|
Critical Values |
||||
|
Analyte |
Units |
Population |
Venous Low |
Venous High |
|
pH |
(none) |
All |
<7.25 |
>7.60 |
|
|
|
|
|
|
|
|
|
|
|
|
| Hemoglobin Reference Ranges | |||||
| Population | Units | Reference Range | Low Critical Value | ||
| < 1 month | g/dL | 13.0 - 19.0 | < 7.0 | ||
| 1 month - 5 month | g/dL | 11.0 - 17.0 | < 7.0 | ||
| 5 month - 2 years | g/dL | 11.0 - 14.0 | < 7.0 | ||
| 2 years - 6 years | g/dL | 11.0 - 13.0 | < 7.0 | ||
| 6 years - 12 years | g/dL | 11.0 - 15.0 | < 7.0 | ||
| Female > 12 years | g/dL | 11.5 - 15.5 | < 7.0 | ||
| Male > 12 years | g/dL | 11.5 - 18.0 | < 7.0 | ||
Methodology
Ion specific electrodes and spectrophotometry. (NOVA)
CPT Code
82803
Last Updated
11-Apr-23 BHD