LOINCActiveBoth

LOINC Code 38643-3: Calcium cyanamide (Air) [Mass/Vol]

38643-3 is a LOINC code used to identify Calcium cyanamide (Air) [Mass/Vol] 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 Calcium cyanamide. It is commonly used with the system or sample type Air.

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 Calcium cyanamide. It is commonly used with the system or sample type Air.

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

  • Calcium cyanamide [Mass/volume] in Air
  • Calcium cyanamide
  • Ca; Cal; Calcium carbimide; Cyanamide; DRUG/TOXICOLOGY; Drugs; Level; Mass concentration; Nitrogen lime; Nitrolim; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Calcium cyanamide (Air) [Mass/Vol]Calcium cyanamide [Mass/volume] in AirCalcium cyanamide Air-mCncCalcium cyanamideDRUG/TOXCalcium cyanamide, AirMCnc

Frequently asked questions

Code details

Code38643-3
SystemLOINC
Display nameCalcium cyanamide (Air) [Mass/Vol]
DescriptionCalcium cyanamide
Short nameCalcium cyanamide Air-mCnc
ComponentCalcium cyanamide
PropertyMCnc
TimingPt
System (specimen)Air
ScaleQn
ClassDRUG/TOX
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.14
Last changed2.34

Consumer names

Calcium cyanamide, Air

Part names

Calcium cyanamideMCncPtAirQnMass ConcentrationPoint in time (spot)

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 38643-3 | HealthAssure