LOINCActive

LOINC Code 19988-5: Oxygen [Partial pressure] in Blood Postductal

19988-5 is a LOINC code used to identify Oxygen [Partial pressure] in Blood Postductal 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 Bld.postductal.

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. It is commonly used with the system or sample type Bld.postductal.

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

What it does not mean

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

Key facts

  • Oxygen [Partial pressure] in Blood Postductal
  • Oxygen
  • To assess presence of patIent ductus arteriosus and potential Right to Left shunt. The electrode is placed on abdomen or lower extremities to monitor postductal blood.
  • Bld Postductal; Bld.foot; BldA.foot; Blood; Lung; O2; O2 partial pressure; Partial pressure; PO2; Point in time; Postductal blood; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; tO2; 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

Oxygen [Partial pressure] in Blood PostductalpO2 Bld PostductalOxygenPULMPPresPtBld.postductal

Frequently asked questions

Code details

Code19988-5
SystemLOINC
Display nameOxygen [Partial pressure] in Blood Postductal
DescriptionOxygen
Short namepO2 Bld Postductal
ComponentOxygen
PropertyPPres
TimingPt
System (specimen)Bld.postductal
ScaleQn
ClassPULM
Example unitsmm Hg
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.30

Part names

OxygenPPresPtBld.postductalQnPartial pressurePoint in time (spot)Blood Postductal

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 19988-5 | HealthAssure