LOINCActiveBoth

LOINC Code 101839-9: Megestrol acetate [Moles/Vol]

101839-9 is a LOINC code used to identify Megestrol acetate [Moles/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 Megestrol acetate. 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 Megestrol acetate. 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: Both

What it does not mean

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

Key facts

  • Megestrol acetate [Moles/volume] in Serum or Plasma
  • Megestrol acetate
  • Acetic acid; DRUG/TOXICOLOGY; Drugs; Ethanoate; Ethanoic acid; Level; Megace; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration

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

Megestrol acetate [Moles/Vol]Megestrol acetate [Moles/volume] in Serum or PlasmaMegestrol Acetate SerPl-sCncMegestrol acetateDRUG/TOXMegestrol acetate, BloodSCnc

Frequently asked questions

Code details

Code101839-9
SystemLOINC
Display nameMegestrol acetate [Moles/Vol]
DescriptionMegestrol acetate
Short nameMegestrol Acetate SerPl-sCnc
ComponentMegestrol acetate
PropertySCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassDRUG/TOX
Example unitsnmol/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.75
Last changed2.76

Consumer names

Megestrol acetate, Blood

Part names

Megestrol acetateSCncPtSer/PlasQnSubstance ConcentrationPoint 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 101839-9 | HealthAssure