Test Overview
Test Methodology

pH Meter

Reference Range *
  • Pleural fluid: 7.64
    Urine: 4.6 - 8.0

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Test not performed on CSF, serum, or sputum specimens.

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

STAT: 1 hour, Routine: 4 hours

Soft Order Code
MiChart Code
pH, Body Fluid
  • Body Fluid, pH
  • PH
  • pH, Urine
  • pH, Urine
  • UPH
STAT Availability

STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).

Specimen Requirements
Collection Instructions

Place body fluid in a lavender top (EDTA) tube or clean, leakproof container.
Collect random urine sample in a plastic urine cup or yellow top no additive urine Vacutainer® tube.
For optimal results, specimen should reach laboratory within 1 hour of collection.<li> If specimen must be stored, refrigeration is recommended.<li>Specimen must be received within 24 hours of collection.

Normal Volume
3 - 5 mL
Minimum Volume
3 mL
Rejection Criteria
Specimens received in syringes, vacuum bottles or large containers will be rejected.
24 hour urine specimens or aliquots from a 24 hour collection will be rejected.
Specimens exceeding the storage criteria will be rejected.
CSF, serum, and sputum specimens are not acceptable.
CPT Code
Fee Code