Sign in →

Test Code PHC pH, Capillary


Glass Electrode (Sorenson pH Concept)

Performing Laboratory

ThedaCare Laboratory

Specimen Requirements

Specimen must arrive within 15 minutes of draw.


Specimen Type: Whole blood, capillary

Container/Tube: Heparinized Natelson tube

Specimen Volume: 0.6 mL

Collection Instructions: Tube must be completely filled, capped, and drawn free of air. Do not expose specimen to air.

Specimen Transport Temperature


Reference Values

0-12 months: 7.30-7.45

>1 year: 7.35-7.45


Critical value (automatic call-back)

Pediatric (<18 years): <7.20 or >7.60
Adult (≥18 years): <7.21 or >7.65

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding