LOINCActiveObservation

LOINC Code 58644-6: Cortisol 12 PM specimen (Sal) [Mass/Vol]

58644-6 is a LOINC code used to identify Cortisol 12 PM specimen (Sal) [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 Cortisol^12 PM specimen. It is commonly used with the system or sample type Saliva.

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 Cortisol^12 PM specimen. It is commonly used with the system or sample type Saliva.

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

What it does not mean

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

Key facts

  • Cortisol [Mass/volume] in Saliva (oral fluid) --12 PM specimen
  • Cortisol^12 PM specimen
  • 17-Hydroxycorticosterone; CHEMISTRY.CHALLENGE TESTING; Compound F; Coritsol; Cort; Evening; F; hydrocortisone; Level; Mass concentration; Noon; Oral fluid; Point in time; QNT; Quan; Quant; Quantitative; Random; Sal; Spec

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

Cortisol 12 PM specimen (Sal) [Mass/Vol]Cortisol [Mass/volume] in Saliva (oral fluid) --12 PM specimenCortis 12 PM Sal-mCncCortisol^12 PM specimenCHALCortisol 12 PM specimen, SalivaMCnc

Frequently asked questions

Code details

Code58644-6
SystemLOINC
Display nameCortisol 12 PM specimen (Sal) [Mass/Vol]
DescriptionCortisol^12 PM specimen
Short nameCortis 12 PM Sal-mCnc
ComponentCortisol^12 PM specimen
PropertyMCnc
TimingPt
System (specimen)Saliva
ScaleQn
ClassCHAL
Example unitsng/mL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.70

Consumer names

Cortisol 12 PM specimen, Saliva

Part names

Cortisol^12 PM specimenMCncPtSalivaQnMass 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 58644-6 | HealthAssure