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LOINC Code 19186-6: Cancer Ag 15-3 Qn (Pleur fld)

19186-6 is a LOINC code used to identify Cancer Ag 15-3 Qn (Pleur 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 Cancer Ag 15-3. It is commonly used with the system or sample type Plr 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 Cancer Ag 15-3. It is commonly used with the system or sample type Plr 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

  • Cancer Ag 15-3 [Units/volume] in Pleural fluid
  • Cancer Ag 15-3
  • Arbitrary concentration; CA; CA 153; CA 15-3; Cancer Ag15-3; Carbohydrate antigen; Chemistry; III; Lung; MUC-1 gene associated AG CA 15-3; Oncology; Pleural; Pleural fluid; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; thoracentesis fluid; Tumor marker

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

Cancer Ag 15-3 Qn (Pleur fld)Cancer Ag 15-3 [Units/volume] in Pleural fluidCancer Ag15-3 Plr-aCncCancer Ag 15-3CHEMCancer Ag 15-3, Pleural fluidACnc

Frequently asked questions

Code details

Code19186-6
SystemLOINC
Display nameCancer Ag 15-3 Qn (Pleur fld)
DescriptionCancer Ag 15-3
Short nameCancer Ag15-3 Plr-aCnc
ComponentCancer Ag 15-3
PropertyACnc
TimingPt
System (specimen)Plr fld
ScaleQn
ClassCHEM
Example unitsarb U/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.68

Consumer names

Cancer Ag 15-3, Pleural fluid

Part names

Cancer Ag 15-3ACncPtPlr fldQnArbitrary ConcentrationPoint in time (spot)Pleural 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.