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26288 pH, Arterial

pH, Arterial
Test Code: APH
Synonyms/Keywords

​blood pH, arterial pH

Test Components

​pH

Useful For

​pH describes the acid-base characteristic of blood, and is an indicator of the balance between the buffer (blood), renal (kidney), and respiratory (lung) systems.

Specimen Requirements
Fasting RequiredSpecimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)
​No​Whole Blood​Heparinized syringe​Lithium or Sodium heparin Green Top (GTT)​3 mL
​0.5 mL​
Collection Processing Instructions

​Draw blood without tourniquet and fist clenching. If a tourniquet must be used, do not release it during the collection. DO NOT introduce air into the syringe. Syringe must be filled to usual draw volume. Ice pack cooling is not required if the sample is analyzed within 30 minutes.

Specimen Stability Information
Specimen TypeTemperatureTime
​Whole Blood ​​Ambient​20 min
​On Ice Pack​45 min
Rejection Criteria
Other anticoagulants such as EDTA, citrate, oxalate, and fluoride
Performing Laboratory Information
Performing LocationDay(s) Test PerformedAnalytical TimeMethodology/Instrumentation
Beaver Dam​
​​​Monday through Sunday​
​​Less than 2 hours
​GEM 5000
Eau Claire​​​Monday through Sunday​​​Less than 1 hour​GEM 4000​
Marshfield
​​Monday through Sunday
​Less than 1 hour​​GEM 4000
Minocqua
​​Monday through Sunday
​Less than 1 hour​​GEM 4000
​Neillsville
​​​Monday through Sunday
​Less than 1 hour​​GEM 4000
Park Falls​​​Monday through Sunday
​Less than 1 hour​​GEM 4000
Rice Lake
​​Monday through Sunday​​
​Less than 1 hour​​GEM 4000
​Weston
​​​Monday through Sunday
​Less than 1 hour​​Radiometer
Reference Range Information
Performing LocationReference Range
​All Centers​7.35 - 7.45
Outreach CPTs
CPTModifier
(if needed)		QuantityDescriptionComments
Synonyms/Keywords

​blood pH, arterial pH

Test Components

​pH

Ordering Applications

Ordering ApplicationDescription

​Cerner
​None

If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting RequiredSpecimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)
​No​Whole Blood​Heparinized syringe​Lithium or Sodium heparin Green Top (GTT)​3 mL
​0.5 mL​
Collection Processing

​Draw blood without tourniquet and fist clenching. If a tourniquet must be used, do not release it during the collection. DO NOT introduce air into the syringe. Syringe must be filled to usual draw volume. Ice pack cooling is not required if the sample is analyzed within 30 minutes.

Specimen Stability Information
Specimen TypeTemperatureTime
​Whole Blood ​​Ambient​20 min
​On Ice Pack​45 min
Rejection Criteria
Other anticoagulants such as EDTA, citrate, oxalate, and fluoride
Useful For

​pH describes the acid-base characteristic of blood, and is an indicator of the balance between the buffer (blood), renal (kidney), and respiratory (lung) systems.

Test Components

​pH

Reference Range Information
Performing LocationReference Range
​All Centers​7.35 - 7.45
For more information visit:
Performing Laboratory Information
Performing LocationDay(s) Test PerformedAnalytical TimeMethodology/Instrumentation
Beaver Dam​
​​​Monday through Sunday​
​​Less than 2 hours
​GEM 5000
Eau Claire​​​Monday through Sunday​​​Less than 1 hour​GEM 4000​
Marshfield
​​Monday through Sunday
​Less than 1 hour​​GEM 4000
Minocqua
​​Monday through Sunday
​Less than 1 hour​​GEM 4000
​Neillsville
​​​Monday through Sunday
​Less than 1 hour​​GEM 4000
Park Falls​​​Monday through Sunday
​Less than 1 hour​​GEM 4000
Rice Lake
​​Monday through Sunday​​
​Less than 1 hour​​GEM 4000
​Weston
​​​Monday through Sunday
​Less than 1 hour​​Radiometer
For billing questions, see Contacts
Outreach CPTs
CPTModifier
(if needed)		QuantityDescriptionComments
For most current information refer to the Marshfield Laboratory online reference manual.