LOINCActiveObservation

LOINC Code 51905-8: Collection end time (Air) [Date/time]

51905-8 is a LOINC code used to identify Collection end time (Air) [Date/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 Collection end time. It is commonly used with the system or sample type Air.

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 Collection end time. 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: Observation

What it does not mean

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

Key facts

  • Collection of air specimen end time
  • Collection end time
  • Hi-volume air filter collection.
  • Coll; Collect; Collect End Tme; Collected; Date and time; Point in time; QNT; Quan; Quant; Quantitative; Random; SPEC; Time stamp; Timestamp

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

Collection end time (Air) [Date/time]Collection of air specimen end timeCollect End Tme AirCollection end timeSPECCollection end time, AirTmStp

Frequently asked questions

Code details

Code51905-8
SystemLOINC
Display nameCollection end time (Air) [Date/time]
DescriptionCollection end time
Short nameCollect End Tme Air
ComponentCollection end time
PropertyTmStp
TimingPt
System (specimen)Air
ScaleQn
ClassSPEC
Example unitsHHMM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.24
Last changed2.70

Consumer names

Collection end time, Air

Part names

Collection end timeTmStpPtAirQnTime Stamp (Date and Time)Point 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 51905-8 | HealthAssure