LOINCActiveBoth

LOINC Code 2705-2: Oxygen (BldV) [Partial pressure]

2705-2 is a LOINC code used to identify Oxygen (BldV) [Partial pressure] 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 Oxygen. It is commonly used with the system or sample type BldV.

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 Oxygen. It is commonly used with the system or sample type BldV.

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

  • Oxygen [Partial pressure] in Venous blood
  • Oxygen
  • Bld ven; Bld venous; Blood - venous; Blood ven; Blood venus; Chemistry; Lung; O2; O2 partial pressure; Partial pressure; PO2; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; tO2; Venous

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

Oxygen (BldV) [Partial pressure]Oxygen [Partial pressure] in Venous bloodpO2 BldVOxygenCHEMOxygen, BloodPPres

Frequently asked questions

Code details

Code2705-2
SystemLOINC
Display nameOxygen (BldV) [Partial pressure]
DescriptionOxygen
Short namepO2 BldV
ComponentOxygen
PropertyPPres
TimingPt
System (specimen)BldV
ScaleQn
ClassCHEM
Example unitsmm Hg
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.73

Consumer names

Oxygen, Blood

Part names

OxygenPPresPtBldVQnPartial pressurePoint in time (spot)Blood 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 2705-2 | HealthAssure