LOINCActiveObservation

LOINC Code 57789-0: DHEA 2 days post dose dexamethasone (24H U) [Mass/Vol]

57789-0 is a LOINC code used to identify DHEA 2 days post dose dexamethasone (24H U) [Mass/Vol] 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 Dehydroepiandrosterone^2D post dose dexamethasone. It is commonly used with the system or sample type Urine.

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 Dehydroepiandrosterone^2D post dose dexamethasone. 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

  • Dehydroepiandrosterone (DHEA) [Mass/volume] in 24 hour Urine --2 days post dose dexamethasone
  • Dehydroepiandrosterone^2D post dose dexamethasone
  • 1 day; 24 hours; 24HR; 2D p Dex; After; c350; CHEMISTRY.CHALLENGE TESTING; Decadron; Dexameth; Dexone; DHEA; Hexadrol; Level; Mass concentration; p Dex; p dose; Prasterone; PST; 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

DHEA 2 days post dose dexamethasone (24H U) [Mass/Vol]Dehydroepiandrosterone (DHEA) [Mass/volume] in 24 hour Urine --2 days post dose dexamethasoneDHEA 2D p Dex 24h Ur-mCncDehydroepiandrosterone^2D post dose dexamethasoneCHALDHEA 2 days after dexamethasone, UrineMCnc

Frequently asked questions

Code details

Code57789-0
SystemLOINC
Display nameDHEA 2 days post dose dexamethasone (24H U) [Mass/Vol]
DescriptionDehydroepiandrosterone^2D post dose dexamethasone
Short nameDHEA 2D p Dex 24h Ur-mCnc
ComponentDehydroepiandrosterone^2D post dose dexamethasone
PropertyMCnc
Timing24H
System (specimen)Urine
ScaleQn
ClassCHAL
Example unitsmg/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

DHEA 2 days after dexamethasone, Urine

Part names

Dehydroepiandrosterone^2D post dose dexamethasoneMCnc24HUrineQnMass Concentration24 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 57789-0 | HealthAssure