LOINC Code 57650-4: C peptide 70 Min pre Unsp challenge [Moles/Vol]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component C peptide^70M pre XXX challenge. It is commonly used with the system or sample type Ser/Plas.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Observation

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• C peptide [Moles/volume] in Serum or Plasma --70 minutes pre XXX challenge
• C peptide^70M pre XXX challenge
• Part of hyperinsulinemic euglycemic clamp test. C peptide is measured during the insulin challenge before glucose injection.
• 70M pre chal; Before; CHEMISTRY.CHALLENGE TESTING; Connecting peptide of insulin; Level; Pept; Pl; Plasma; Plsm; Point in time; pre chal; Pro-insulin c peptide; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions