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HelpTest Code PHV pH Venous
Additional Codes
|
Cerner |
NextGen |
|
PH Venous |
PH Venous |
Useful For
Base Excess and Base Deficit, define acid-base status.
Methodology
Potentiometric
Patient Preparation
None
Collection Instructions
Standard phlebotomy practices.
Specimen Requirements
|
Minimum Volume |
150 µL |
|
Container |
Heparinized Syringe free of air bubbles Or Lithium Heparin tube |
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Stability |
Within 30 minutes of collection |
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Rejection Criteria |
The Laboratory will not accept specimens in syringes with needles -- the syringe must be capped with a rubber stopper. |
Result Reporting and Reference Values
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UNITS |
AGE |
REFERENCE RANGE |
||
|
pH units |
0D-150Y |
7.31 |
-- |
7.41 |
Reflex Testing
None
Limitations
- Air bubbles must be removed from the sample immediately. Contamination with room air will affect results.
- Clotting and dilutional effects may be present if the sample collection technique is not performed correctly.
- The presence of unknown interfering substances, clots or other foreign matter within the blood sample that alters the optical spectrum will result in higher levels of residual spectrum. A sample with an absorbance error will not be reported.
- Anticoagulants such as EDTA, citrate, oxalate, or fluoride will not be accepted since they significantly affect pH.
- The substances listed below showed an interference with CO-Oximetry/tBili analytes causing a clinically significant error (> TEa).