LOINCActiveObservation

LOINC Code 14971-6: E1.bioavailable [Mass fraction]

14971-6 is a LOINC code used to identify E1.bioavailable [Mass 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 Estrone.bioavailable/Estrone.total. It is commonly used with the system or sample type Ser/Plas.

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 Estrone.bioavailable/Estrone.total. It is commonly used with the system or sample type Ser/Plas.

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

  • Estrone (E1).bioavailable/Estrone (E1).total in Serum or Plasma
  • Estrone.bioavailable/Estrone.total
  • Chemistry; E1; Estrone Bioavail; Gyn; Gynecology; Mass Fraction; OB; ObGyn; Obstetrics; Percent; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Tot; Totl

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

E1.bioavailable [Mass fraction]Estrone (E1).bioavailable/Estrone (E1).total in Serum or PlasmaEstrone Bioavail MFr SerPlEstrone.bioavailable/Estrone.totalCHEMBioavailable estrone, BloodMFr

Frequently asked questions

Code details

Code14971-6
SystemLOINC
Display nameE1.bioavailable [Mass fraction]
DescriptionEstrone.bioavailable/Estrone.total
Short nameEstrone Bioavail MFr SerPl
ComponentEstrone.bioavailable/Estrone.total
PropertyMFr
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Bioavailable estrone, Blood

Part names

Estrone.bioavailable/Estrone.totalMFrPtSer/PlasQnMass fractionPoint in time (spot)Serum or Plasma

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 14971-6 | HealthAssure