LOINC Code 4524-5: Complement membrane attack complex (C5b-C6-C7-C8-C9n) (P) [Mass/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 Complement membrane attack complex (C5b-C6-C7-C8-C9n). It is commonly used with the system or sample type 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: Both

What it does not mean

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

Key facts

• Complement membrane attack complex (C5b-C6-C7-C8-C9n) [Mass/volume] in Plasma
• Complement membrane attack complex (C5b-C6-C7-C8-C9n)
• Comp; Comp MAC; Complmt; Compx; HEMATOLOGY/CELL COUNTS; Level; MAC; Mass concentration; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random

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