What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActive

LOINC Code 20015-4: Oxygen [Partial pressure] (Minimum value during study) Capillary blood Transcutaneous O2 monitor --on room air and asleep

Name: LOINC Code 20015-4: Oxygen [Partial pressure] (Minimum value during study) Capillary blood Transcutaneous O2 monitor --on room air and asleep
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.844Z

20015-4 is a LOINC code used to identify Oxygen [Partial pressure] (Minimum value during study) Capillary blood Transcutaneous O2 monitor --on room air and asleep 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^on room air and asleep. It is commonly used with the system or sample type BldC.

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 Oxygen^on room air and asleep. It is commonly used with the system or sample type BldC.

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
Method: Transcutaneous O2 monitor

What it does not mean

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

Key facts

Oxygen [Partial pressure] (Minimum value during study) Capillary blood Transcutaneous O2 monitor --on room air and asleep
Oxygen^on room air and asleep
Transcutaneous monitors measure saturation
asleep room air; Blood - capillary; Cap bld; Cap blood; Capillary bld; Capillary blood; Finger stick; Lung; Minimal; minimum; O2; O2 partial pressure; Partial pressure; PO2; PTC; PTCO2; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Respiratory; Studies; Study; Sutdies; tCO2; TCP; TCPO2; tO2

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 [Partial pressure] (Minimum value during study) Capillary blood Transcutaneous O2 monitor --on room air and asleeppO2 asleep room air Min BldC TcO2Oxygen^on room air and asleepPULMPPresStdy^minBldC

Frequently asked questions

Code details

Code20015-4

SystemLOINC

Display nameOxygen [Partial pressure] (Minimum value during study) Capillary blood Transcutaneous O2 monitor --on room air and asleep

DescriptionOxygen^on room air and asleep

Short namepO2 asleep room air Min BldC TcO2

ComponentOxygen^on room air and asleep

PropertyPPres

TimingStdy^min

System (specimen)BldC

ScaleQn

MethodTranscutaneous O2 monitor

ClassPULM

Example unitsmm Hg

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.54

Part names

Oxygen^on room air and asleepPPresStdy^minBldCQnTranscutaneous O2 monitorPartial pressureBlood capillary

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.