LOINCActiveObservation

LOINC Code 76683-2: Mean platelet component Calc (Bld) [Mass/Vol]

76683-2 is a LOINC code used to identify Mean platelet component Calc (Bld) [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 Mean platelet component. It is commonly used with the system or sample type Bld.

Reviewed by HealthAssure Clinical TeamUpdated 21 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 Mean platelet component. It is commonly used with the system or sample type Bld.

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
  • Method: Calculated

What it does not mean

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

Key facts

  • Mean platelet component [Mass/volume] in Blood by calculation
  • Mean platelet component
  • This term was created for, but not limited in use to, the Siemens Advia 120 Hematology system, which provides an approximate measure of the mean refractive index (RI) of platelets reported as MPC.
  • Average; Avg; Blood; Calc; Calculation; HEMATOLOGY/CELL COUNTS; Level; Mass concentration; MPC; Pl; Platelets; Platelt; Plt; Point in time; QNT; Quan; Quant; Quantitative; Random; Thrombocyte; Thrombocytes; WB; Whole blood

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

Mean platelet component Calc (Bld) [Mass/Vol]Mean platelet component [Mass/volume] in Blood by calculationMPC Bld Calc-mCncMean platelet componentHEM/BCMean platelet component, BloodMCnc

Frequently asked questions

Code details

Code76683-2
SystemLOINC
Display nameMean platelet component Calc (Bld) [Mass/Vol]
DescriptionMean platelet component
Short nameMPC Bld Calc-mCnc
ComponentMean platelet component
PropertyMCnc
TimingPt
System (specimen)Bld
ScaleQn
MethodCalculated
ClassHEM/BC
Example unitsg/dL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.52
Last changed2.52

Consumer names

Mean platelet component, Blood

Part names

Mean platelet componentMCncPtBldQnCalculatedMass ConcentrationPoint in time (spot)Blood

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 76683-2 | HealthAssure