LOINCActiveBoth

LOINC Code 30351-1: Hemoglobin (BldMV) [Mass/Vol]

30351-1 is a LOINC code used to identify Hemoglobin (BldMV) [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 Hemoglobin. It is commonly used with the system or sample type BldMV.

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 Hemoglobin. It is commonly used with the system or sample type BldMV.

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

  • Hemoglobin [Mass/volume] in Mixed venous blood
  • Hemoglobin
  • Bld mixed venous; Blood - mixed venous; Haemoglobin; Hb; HEMATOLOGY/CELL COUNTS; Hgb; Level; Mass concentration; 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

Hemoglobin (BldMV) [Mass/Vol]Hemoglobin [Mass/volume] in Mixed venous bloodHgb BldMV-mCncHemoglobinHEM/BCHemoglobin, BloodMCnc

Frequently asked questions

Code details

Code30351-1
SystemLOINC
Display nameHemoglobin (BldMV) [Mass/Vol]
DescriptionHemoglobin
Short nameHgb BldMV-mCnc
ComponentHemoglobin
PropertyMCnc
TimingPt
System (specimen)BldMV
ScaleQn
ClassHEM/BC
Example unitsg/dL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.04
Last changed2.73

Consumer names

Hemoglobin, Blood

Part names

HemoglobinMCncPtBldMVQnMass ConcentrationPoint in time (spot)Blood mixed venous

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 30351-1 | HealthAssure