LOINCActiveObservation

LOINC Code 59275-8: Oxygen capacity (BldA) [Volume fraction]

59275-8 is a LOINC code used to identify Oxygen capacity (BldA) [Volume fraction] 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 capacity. It is commonly used with the system or sample type BldA.

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 capacity. It is commonly used with the system or sample type BldA.

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: Observation

What it does not mean

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

Key facts

  • Oxygen capacity [Volume Fraction] in Arterial blood
  • Oxygen capacity
  • Oxygen capacity is similar to oxygen content, but allows for carboxyhemoglobin and methemoglobin concentrations. The calculation is 139xTHB (total hemoglobin) x 1 -((%COHb+%MetHb)/100).
  • ABG; ART; Art bld; Art blood; Arterial; Arterial blood; Blood arterial; Chemistry; O2; O2 Cap; O2Cap; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; tO2; Volfr; Volume fraction

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 capacity (BldA) [Volume fraction]Oxygen capacity [Volume Fraction] in Arterial bloodO2 Cap VFr BldAOxygen capacityCHEMOxygen capacity, BloodVFr

Frequently asked questions

Code details

Code59275-8
SystemLOINC
Display nameOxygen capacity (BldA) [Volume fraction]
DescriptionOxygen capacity
Short nameO2 Cap VFr BldA
ComponentOxygen capacity
PropertyVFr
TimingPt
System (specimen)BldA
ScaleQn
ClassCHEM
Example unitsml/dl
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.73

Consumer names

Oxygen capacity, Blood

Part names

Oxygen capacityVFrPtBldAQnVolume FractionPoint in time (spot)Blood arterial

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 59275-8 | HealthAssure