LOINCActiveBoth

LOINC Code 56661-2: Myelin basic protein (S) [Mass/Vol]

56661-2 is a LOINC code used to identify Myelin basic protein (S) [Mass/Vol] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Myelin basic protein. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

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 Myelin basic protein. It is commonly used with the system or sample type Ser.

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

  • Myelin basic protein [Mass/volume] in Serum
  • Myelin basic protein
  • Chemistry; Level; Mass concentration; MBP; Point in time; PR; Prot; QNT; Quan; Quant; Quantitative; Random; Serum; SR

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

Myelin basic protein (S) [Mass/Vol]Myelin basic protein [Mass/volume] in SerumMBP Ser-mCncMyelin basic proteinCHEMMyelin basic protein, BloodMCnc

Frequently asked questions

Code details

Code56661-2
SystemLOINC
Display nameMyelin basic protein (S) [Mass/Vol]
DescriptionMyelin basic protein
Short nameMBP Ser-mCnc
ComponentMyelin basic protein
PropertyMCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassCHEM
Example unitsng/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.70

Consumer names

Myelin basic protein, Blood

Part names

Myelin basic proteinMCncPtSerQnMass ConcentrationPoint in time (spot)Serum

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 56661-2 | HealthAssure