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Lab Manual for Moffitt-Long and Mount Zion

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pH, urine

Item Value
Approval req'd? No
Available Stat? No
Test code PHU
Test group pH
Performed by Parnassus Chemistry
In House Availability Test available 24 hours per day 7 days per week
Collection Instructions Deliver promptly to laboratory. Refrigerate if delivery delayed > 60 min.
Container type Red top, black top or urine cup
Amount to Collect See preferred volume
Sample type Random urine
Preferred volume 5 mL urine
UCSF Rejection Criteria Unrefrigerated samples delivered to lab > 2 hours after collection.
Processing notes Deliver immediately to lab for stat processing.
Do not open tube.
Normal range 4.6-8.0
Stability Room temperature 2 hours, refrigerated 1 day. Note: pH may change with storage, test should be run asap.
Turn around times 4 hours
Additional information Part of routine urinalysis. Order only if greater accuracy than dipstick testing is required.

Specimens should not be unrefrigerated for more than an hour before they are delivered to the laboratory or pH changes may occur due to bacterial growth.
LOINC code 2756-5
Last Updated 3/24/2013 7:51:55 PM
Entry Number 734
Lab Procedure Link Click here for Procedure
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