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22764 PH, Blood

PH, Blood
Test Code: MISC
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 Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen 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​0.3 mL​ ​
Collection Processing Instructions
Place specimen on a cold pack or on wet ice immediately after collection. Remove the needle from the syringe and transport to the lab without delay.​
Specimen Stability Information
Specimen Type Temperature
Whole blood​ Cannot be stored​
Rejection Criteria
​Specimens that are more than 30 minutes old or have not been kept cold
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Sunday​ Less than 2 hours​ Roche Cobas b221
Test Information
A test code is not available for a single blood pH. Order as MISC with a comment "blood specimen".​
Reference Range Information
Performing Location Reference Range
 Marshfield ​ Arterial: 7.35-7.45
Venous:  7.32-7.42​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82800 ​ ​ ​ ​ ​
Ordering Applications
Ordering Application Description
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
 
 
 
 
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen 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​0.3 mL​ ​
Collection Processing
Place specimen on a cold pack or on wet ice immediately after collection. Remove the needle from the syringe and transport to the lab without delay.​
Specimen Stability Information
Specimen Type Temperature
Whole blood​ Cannot be stored​
Rejection Criteria
​Specimens that are more than 30 minutes old or have not been kept cold
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.​
Reference Range Information
Performing Location Reference Range
 Marshfield ​ Arterial: 7.35-7.45
Venous:  7.32-7.42​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Sunday​ Less than 2 hours​ Roche Cobas b221
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82800 ​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.