Sign in →

Test Code LAB4158 PH, VENOUS

Specimen Type

Preferred Specimen: Heparinized Syringe
Alternative Specimen: Dark Green Lithium Heparin Tube (no gel)

Specimen Volume

1 mL; if using green top tube, tube must be full

Minimum Volume

0.2 mL; if using green top tube, tube must be full

Turnaround Time

Test should be run within 30 minutes of collection

Test Schedule

Daily

Sample Stability

Room Temp: 30 min
On Wet Ice: 30 min to 1 hour

Method

Ion Transfer Electrode/Potentiometry/Co-oximeter

Reference Ranges

pH, Venous 7.35 – 7.45

CPT Codes

82800

Test Components

pH

Collection Instructions

Immerse specimen completely in ice water. Store and transport on ice water.

Rejection Criteria

Specimen exposed to air or not kept on ice. Venous pH cannot be run on a tue whose cork was previously removed.