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Fetal pH,Venous
MessagePerforming Lab: Regions
Test Code
3757
Alias/See Also
Sunquest: PHFTV
CPT Codes
82800
Includes
Venous pH;Base Excess/Deficit
Preferred Specimen
1.0 mL Heparinized Venous Blood (Blood Gas Syringe)
Minimum Volume
0.5 mL
Instructions
Samples should be free of air bubbles, received on ice slush and run immediately. (Exceptions to the ice slush are samples received via the pneumatic tube system, as long as they are received within 30 minutes of collection.)
Transport Container
Blood Gas Syringe
Transport Temperature
Ice Slush
Specimen Stability
Ice Slush: 1 hour
Room Temperature: 30 minutes
Room Temperature: 30 minutes
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Room Temperature >30 minutes
Methodology
Electrode
Setup Schedule
Daily
Report Available
Same Day
Reference Range
7.260 - 7.490
Clinical Significance
pH is clinically significant as a means of determining acid-base disturbances. Acid-base disorders can result in several pathologic conditions. An acid-base disorder resulting initially from ventilatory dysfunction is called a primary respiratory acidosis or alkalosis, while a disorder due to renal or gastrointestinal inadequacy is referred to as metabolic acidosis or alkalosis. Cord Blood or Fetal pH of less than 7.20 causes fetal distress