LOINCActiveBoth

LOINC Code 50858-0: Hydrogen ion (BldCoMV) [Moles/Vol]

50858-0 is a LOINC code used to identify Hydrogen ion (BldCoMV) [Moles/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 Hydrogen ion. It is commonly used with the system or sample type BldCoMV.

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 Hydrogen ion. It is commonly used with the system or sample type BldCoMV.

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

  • Hydrogen ion [Moles/volume] in Mixed venous cord blood
  • Hydrogen ion
  • Bld cord; Chemistry; H ion; H2; Hyd; Level; Mixed venous cord blood; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

Hydrogen ion (BldCoMV) [Moles/Vol]Hydrogen ion [Moles/volume] in Mixed venous cord bloodH ion BldCoMV-sCncHydrogen ionCHEMHydrogen ion, Cord BloodSCnc

Frequently asked questions

Code details

Code50858-0
SystemLOINC
Display nameHydrogen ion (BldCoMV) [Moles/Vol]
DescriptionHydrogen ion
Short nameH ion BldCoMV-sCnc
ComponentHydrogen ion
PropertySCnc
TimingPt
System (specimen)BldCoMV
ScaleQn
ClassCHEM
Example unitsnmol/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.70

Consumer names

Hydrogen ion, Cord Blood

Part names

Hydrogen ionSCncPtBldCoMVQnSubstance ConcentrationPoint in time (spot)Blood cord 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 50858-0 | HealthAssure