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HelpTest Code UPHB pH, Body Fluid
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Body FluidOrdering Guidance
To measure pH of a urine specimen, order PHU_ / pH, Random, Urine.
Necessary Information
1. Date and time of collection.
2. Specimen source
-Identify source name from the following list with location (if appropriate):
-Peritoneal fluid (peritoneal, abdominal, ascites, paracentesis)
-Drain fluid (drainage, JP drain)
-Synovial fluid
-Write in source name with source location (if appropriate)
Specimen Required
Supplies: Metal Free Specimen Vial (T173)
Container/Tube: Metal-free container
Specimen Volume: 5 mL
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Body Fluid | Refrigerated (preferred) | 7 days |
| Frozen | 7 days | |
| Ambient | 24 hours |
Reference Values
An interpretive report will be provided.
CPT Code Information
83986
Clinical Information
The pH value is a measure of hydrogen ion concentration. Increased metabolic activity and production of acidic byproducts (eg, lactic acid) due to infection are known to decrease pH. A variety of disease processes can alter pH values; therefore, low pH has reduced specificity. Gastric content typically has a low pH, and measurement of pH has been used to help identify gastric fluid. Determining the pH value of a body fluid may help characterize the nature of the fluid.
Reject Due To
| Spinal fluid Chest (thoracic) fluid Thoracentesis Pleural fluid Urine |
Reject |
Method Name
pH Meter
Day(s) Performed
Monday through Sunday