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22475 C-Peptide

C-Peptide
Test Code: CPEP
Synonyms/Keywords
​C-Peptide​
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)

Yes​

 Serum​/Plasma
Lithium Heparin Plasma Separator Tube (PST)
Lithium Heparin Green Top (GTT), EDTA Lavender Top Tube (LTT), Serum Separator Tube (SST). ​Red Top Tube (RTT)​1.0 mL​0.5 mL​0.3 mL​
Collection Processing Instructions
Fasting sample - typically > or = 8 hours.​
Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ Ambient​ 1 day
Refrigerated​ 2 days
Frozen​ 90 days
Rejection Criteria
Gross hemolysis
Performing Laboratory Information
 
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday, Wednesday, Friday2 hours
Immunoenzymatic assay/ Beckman Coulter DXI 800​
Test Information
To convert to pmol/L, multiply ng/mL x 331.​
Reference Range Information
Performing Location Reference Range
Marshfield​ 0.8 - 3.9 ng/mL (= ug/L)​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
84681 ​ ​ ​ ​ ​
Synonyms/Keywords
​C-Peptide​
Ordering Applications
Ordering Application Description
​Centricity ​C-Peptide
​Cerner ​C-Peptide
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)

Yes​

 Serum​/Plasma
Lithium Heparin Plasma Separator Tube (PST)
Lithium Heparin Green Top (GTT), EDTA Lavender Top Tube (LTT), Serum Separator Tube (SST). ​Red Top Tube (RTT)​1.0 mL​0.5 mL​0.3 mL​
Collection Processing
Fasting sample - typically > or = 8 hours.​
Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ Ambient​ 1 day
Refrigerated​ 2 days
Frozen​ 90 days
Rejection Criteria
Gross hemolysis
Reference Range Information
Performing Location Reference Range
Marshfield​ 0.8 - 3.9 ng/mL (= ug/L)​
For more information visit:
Performing Laboratory Information
 
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday, Wednesday, Friday2 hours
Immunoenzymatic assay/ Beckman Coulter DXI 800​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
84681 ​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.