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pH Measurement — Specimen and Method Not Identified

Published: August 9, 2026Updated: August 16, 2026

The code appears to represent a pH measurement, but it does not clearly identify the specimen, method, or units. The exact test and result must be confirmed with the ordering laboratory.

Quick summary

["This appears to be a pH test, but more information is needed to identify the specimen and interpret the result accurately."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
92200-5
Short code
PH emerg budget implement unit
Synonyms
PH emerg budget implement unit
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

A pH measurement determines how acidic or alkaline a body fluid is. The abbreviation appears to include pH, but the remaining code does not clearly identify the specimen or testing method.

Why might I need this test?

Depending on the specimen, a pH test may help assess acid-base balance or the chemical condition of a fluid. Your healthcare professional can explain the reason this measurement was ordered.

How is the test performed?

A laboratory collects the appropriate fluid and measures its pH using calibrated equipment. Handling, timing, and exposure to air can affect some specimens, so the laboratory follows specimen-specific procedures.

How do I prepare for the test?

Preparation depends on the specimen and the clinical situation. Follow the laboratory's instructions and tell the care team about relevant medications, supplements, or recent illness unless you have been told otherwise.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

pH test

Frequently asked questions

What specimen is used for this test?
The specimen cannot be reliably determined from this abbreviation. It may be blood, plasma, urine, or another fluid, and each has different preparation and interpretation requirements.
Does an abnormal pH result always mean there is a health problem?
No. The meaning depends on the specimen, the measurement method, sample handling, and your clinical condition. A clinician should interpret the result alongside other tests.
Should I change my medications or diet before this test?
Do not make changes unless the ordering clinician specifically advises it. Ask the laboratory what preparation is required once the specimen and test details have been confirmed.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy