C-Peptide, Ultrasensitive (Endocrine Sciences)

CPT: 84681
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Test Details

Use

C-peptide measurement

Limitations

This assay has a lower limit of detection of 0.004 ng/mL.

Methodology

Electrochemiluminescence (ECL)

Specimen Requirements

Specimen

Serum (preferred) or plasma

Volume

1 mL

Minimum Volume

0.3 mL (Note: This volume does not allow for repeat testing.)

Container

Gel-barrier tube, red-top tube, or lavender-top (EDTA) tube

Collection

Serum or plasma must be separated from cells within 45 minutes of venipuncture. Submit specimen in a plastic transport tube. Freeze plastic transport tube (preferred) or refrigerate. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.

Storage Instructions

Freeze (preferred) or refrigerate. Stable at room temperature for one day or refrigerated for seven days. Stable for 348 days frozen. Freeze/thaw cycles: x6.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
503830 C Peptide, Ultrasensitive, ES 503833 C Peptide, Ultrasensitive, ES ng/mL 1986-9
503830 C Peptide, Ultrasensitive, ES 503831 C Peptide, Ultrasensitive, ES N/A

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The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf