LOINCActiveBoth

LOINC Code 53816-5: Alpha hydroxytriazolam (S) [Mass/Vol]

53816-5 is a LOINC code used to identify Alpha hydroxytriazolam (S) [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 Alpha hydroxytriazolam. It is commonly used with the system or sample type Ser.

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 Alpha hydroxytriazolam. It is commonly used with the system or sample type Ser.

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

  • Alpha hydroxytriazolam [Mass/volume] in Serum
  • Alpha hydroxytriazolam
  • 1-hydroxytriazolam; Alfa; Alpha hydroxy triazolam; A-OH-triazolam; DRUG/TOXICOLOGY; Drugs; Hydroxy triazolam; Level; Mass concentration; OH-Triazolam; OHTRZ; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; Triazolam metabolite

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

Alpha hydroxytriazolam (S) [Mass/Vol]Alpha hydroxytriazolam [Mass/volume] in SerumA-OH-triazolam Ser-mCncAlpha hydroxytriazolamDRUG/TOXAlpha hydroxytriazolam, BloodMCnc

Frequently asked questions

Code details

Code53816-5
SystemLOINC
Display nameAlpha hydroxytriazolam (S) [Mass/Vol]
DescriptionAlpha hydroxytriazolam
Short nameA-OH-triazolam Ser-mCnc
ComponentAlpha hydroxytriazolam
PropertyMCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassDRUG/TOX
Example unitsng/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.26
Last changed2.73

Consumer names

Alpha hydroxytriazolam, Blood

Part names

Alpha hydroxytriazolamMCncPtSerQnMass ConcentrationPoint in time (spot)Serum

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 53816-5 | HealthAssure