LOINCActiveObservation

LOINC Code 45039-5: C. botulinum toxin IA Ql (Specimen)

45039-5 is a LOINC code used to identify C. botulinum toxin IA Ql (Specimen) 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 Clostridium botulinum toxin. It is commonly used with the system or sample type XXX.

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 Clostridium botulinum toxin. It is commonly used with the system or sample type XXX.

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: Observation
  • Method: IA

What it does not mean

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

Key facts

  • Clostridium botulinum toxin [Presence] in Specimen by Immunoassay
  • Clostridium botulinum toxin
  • BoNT; BTX; C bot; C bot Tox; C botulinum; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; ID; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Misc; Miscellaneous; Ordinal; Other; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spec; SUDS; To be specified in another part of the message; Unspecified

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

C. botulinum toxin IA Ql (Specimen)Clostridium botulinum toxin [Presence] in Specimen by ImmunoassayC bot Tox Spec Ql IAClostridium botulinum toxinMICROClostridium botulinum toxin, SpecimenPrThr

Frequently asked questions

Code details

Code45039-5
SystemLOINC
Display nameC. botulinum toxin IA Ql (Specimen)
DescriptionClostridium botulinum toxin
Short nameC bot Tox Spec Ql IA
ComponentClostridium botulinum toxin
PropertyPrThr
TimingPt
System (specimen)XXX
ScaleOrd
MethodIA
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.69

Consumer names

Clostridium botulinum toxin, Specimen

Part names

Clostridium botulinum toxinPrThrPtXXXOrdIAPresence or ThresholdPoint in time (spot)Immunoassay

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 45039-5 | HealthAssure