LOINCActiveObservation

LOINC Code 55906-2: Alpha cortolone (24H U) [Mass/Time]

55906-2 is a LOINC code used to identify Alpha cortolone (24H U) [Mass/Time] 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 Alpha cortolone. It is commonly used with the system or sample type Urine.

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 Alpha cortolone. It is commonly used with the system or sample type Urine.

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

  • Alpha cortolone [Mass/time] in 24 hour Urine
  • Alpha cortolone
  • 1 day; 24 hours; 24HR; A-cortolone; Alfa; Chemistry; Cortisol metabolite; Mass rate; mRate; QNT; Quan; Quant; Quantitative; UA; UR; Urn

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

Alpha cortolone (24H U) [Mass/Time]Alpha cortolone [Mass/time] in 24 hour UrineA-cortolone 24h Ur-mRateAlpha cortoloneCHEMAlpha cortolone, UrineMRat

Frequently asked questions

Code details

Code55906-2
SystemLOINC
Display nameAlpha cortolone (24H U) [Mass/Time]
DescriptionAlpha cortolone
Short nameA-cortolone 24h Ur-mRate
ComponentAlpha cortolone
PropertyMRat
Timing24H
System (specimen)Urine
ScaleQn
ClassCHEM
Example unitsmg/24 H
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.70

Consumer names

Alpha cortolone, Urine

Part names

Alpha cortoloneMRat24HUrineQnMass Rate24 hours

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 55906-2 | HealthAssure