LOINCActiveBoth

LOINC Code 18265-9: Acetaminophen Ql (Body fld)

18265-9 is a LOINC code used to identify Acetaminophen Ql (Body fld) 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 Acetaminophen. It is commonly used with the system or sample type Body fld.

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 Acetaminophen. It is commonly used with the system or sample type Body fld.

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

  • Acetaminophen [Presence] in Body fluid
  • Acetaminophen
  • ACET; Acetamidophenol; Acetaminoph; Acetominophen; Addiction; APAP; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; c209; C55; DRUG/TOXICOLOGY; Drugs; Drugs of abuse; Fl; Fld; FLU; Fluid; Hepatology; Hydroxyacetanilide; Illicit; Liver; N-(4-Hydroxyphenyl)acetanilide; N-Acetyl-p-aminophenol; Ordinal; p-Acetamidophenol; Paracetamol; p-Hydroxyacetanilide; Point in time; PotentialForAbuse; PR; QL; Qual; Qualitative; Random; Screen; Tylenol; u209

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

Acetaminophen Ql (Body fld)Acetaminophen [Presence] in Body fluidAPAP Fld QlAcetaminophenDRUG/TOXAcetaminophen, Body fluidPrThr

Frequently asked questions

Code details

Code18265-9
SystemLOINC
Display nameAcetaminophen Ql (Body fld)
DescriptionAcetaminophen
Short nameAPAP Fld Ql
ComponentAcetaminophen
PropertyPrThr
TimingPt
System (specimen)Body fld
ScaleOrd
ClassDRUG/TOX
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.56

Consumer names

Acetaminophen, Body fluid

Part names

AcetaminophenPrThrPtBody fldOrdPresence or ThresholdPoint in time (spot)Body fluid

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 18265-9 | HealthAssure