What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 20415-6: HCG.beta subunit IA 3rd IS Qn

Name: LOINC Code 20415-6: HCG.beta subunit IA 3rd IS Qn
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.847Z

20415-6 is a LOINC code used to identify HCG.beta subunit IA 3rd IS Qn 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 Choriogonadotropin.beta subunit. 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 Choriogonadotropin.beta subunit. 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
Method: EIA.3rd IS

What it does not mean

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

Key facts

Choriogonadotropin.beta subunit [Units/volume] in Serum or Plasma by Immunoassay (EIA) 3rd IS
Choriogonadotropin.beta subunit
3IS; 3rd International Standard; 3rdIS; Arbitrary concentration; B; B HCG; Beta HCG; Beta human chorionic gonadotropin; B-HCG; CG; Chemistry; Choriogonadotropin beta chain; Choriogonadotropins total; Chorionic gonadotropin; EIA 3rd IS; HCG; Human chorionic gonadotropin; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; 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

HCG.beta subunit IA 3rd IS QnChoriogonadotropin.beta subunit [Units/volume] in Serum or Plasma by Immunoassay (EIA) 3rd ISB-HCG SerPl EIA 3rd IS-aCncChoriogonadotropin.beta subunitCHEMHCG.beta subunit, BloodACnc

Frequently asked questions

Code details

Code20415-6

SystemLOINC

Display nameHCG.beta subunit IA 3rd IS Qn

DescriptionChoriogonadotropin.beta subunit

Short nameB-HCG SerPl EIA 3rd IS-aCnc

ComponentChoriogonadotropin.beta subunit

PropertyACnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodEIA.3rd IS

ClassCHEM

Example unitsmIU/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.73

Consumer names

HCG.beta subunit, Blood

Part names

Choriogonadotropin.beta subunitACncPtSer/PlasQnEIA.3rd ISArbitrary ConcentrationPoint in time (spot)Serum or PlasmaImmunoassay (EIA) 3rd IS

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.