LOINCActiveBoth

LOINC Code 56497-1: HCG.beta subunit (24H U) [Units/Time]

56497-1 is a LOINC code used to identify HCG.beta subunit (24H U) [Units/Time] 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 Urine.

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 Choriogonadotropin.beta subunit. 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: Both

What it does not mean

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

Key facts

  • Choriogonadotropin.beta subunit [Units] in 24 hour Urine
  • Choriogonadotropin.beta subunit
  • 1 day; 24 hours; 24HR; Arbitrary rate; B; B HCG; Beta HCG; Beta human chorionic gonadotropin; B-HCG; CG; Chemistry; Choriogonadotropin beta chain; Choriogonadotropins total; Chorionic gonadotropin; HCG; Human chorionic gonadotropin; QNT; Quan; Quant; Quantitative; Tumor marker; 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

HCG.beta subunit (24H U) [Units/Time]Choriogonadotropin.beta subunit [Units] in 24 hour UrineB-HCG 24h UrChoriogonadotropin.beta subunitCHEMHCG.beta subunit, UrineARat

Frequently asked questions

Code details

Code56497-1
SystemLOINC
Display nameHCG.beta subunit (24H U) [Units/Time]
DescriptionChoriogonadotropin.beta subunit
Short nameB-HCG 24h Ur
ComponentChoriogonadotropin.beta subunit
PropertyARat
Timing24H
System (specimen)Urine
ScaleQn
ClassCHEM
Example unitsIU/24 H
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

HCG.beta subunit, Urine

Part names

Choriogonadotropin.beta subunitARat24HUrineQnArbitrary Rate24 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 56497-1 | HealthAssure