C-Peptide

C-Peptide is a topic covered in the Davis's Lab & Diagnostic Tests.

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General

Synonym/Acronym:

Connecting peptide insulin, insulin C-peptide, proinsulin C-peptide.

Rationale

To evaluate hypoglycemia, assess beta cell function, and monitor insulin production.

Patient Preparation

There are no fluid, activity, or medication restrictions unless by medical direction. Instruct the patient to fast for at least 10 hr before specimen collection. Protocols may vary among facilities.

Normal Findings

Method: Immunochemiluminometric assay (ICMA).

AgeConventional UnitsSI Units (Conventional Units × 0.333)
Child0–3.3 ng/mL0–1.1 nmol/L
Adult0.8–3.5 ng/mL0.3–1.2 nmol/L
1-hr response to glucose2.3–11.8 ng/mL0.8–3.9 nmol/L

Critical Findings and Potential Interventions

N/A

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General

Synonym/Acronym:

Connecting peptide insulin, insulin C-peptide, proinsulin C-peptide.

Rationale

To evaluate hypoglycemia, assess beta cell function, and monitor insulin production.

Patient Preparation

There are no fluid, activity, or medication restrictions unless by medical direction. Instruct the patient to fast for at least 10 hr before specimen collection. Protocols may vary among facilities.

Normal Findings

Method: Immunochemiluminometric assay (ICMA).

AgeConventional UnitsSI Units (Conventional Units × 0.333)
Child0–3.3 ng/mL0–1.1 nmol/L
Adult0.8–3.5 ng/mL0.3–1.2 nmol/L
1-hr response to glucose2.3–11.8 ng/mL0.8–3.9 nmol/L

Critical Findings and Potential Interventions

N/A

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