LOINCActive

LOINC Code 29008-0: Left eye Tear secretion break up [Time] Schirmer test

29008-0 is a LOINC code used to identify Left eye Tear secretion break up [Time] Schirmer test 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 Tear secretion break up. It is commonly used with the system or sample type Eye.left.

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 Tear secretion break up. It is commonly used with the system or sample type Eye.left.

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
  • Method: Schirmer test

What it does not mean

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

Key facts

  • Left eye Tear secretion break up [Time] Schirmer test
  • Tear secretion break up
  • Eye; EYE.PX; Eyeball; L; L eye; LT; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophtho; Ophthy; Optic globe; Point in time; QNT; Quan; Quant; Quantitative; Random; TS break up; Vision; Visual

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

Left eye Tear secretion break up [Time] Schirmer testL eye TS break up [Time] SchirmerTear secretion break upEYE.PXTimePtEye.left

Frequently asked questions

Code details

Code29008-0
SystemLOINC
Display nameLeft eye Tear secretion break up [Time] Schirmer test
DescriptionTear secretion break up
Short nameL eye TS break up [Time] Schirmer
ComponentTear secretion break up
PropertyTime
TimingPt
System (specimen)Eye.left
ScaleQn
MethodSchirmer test
ClassEYE.PX
Example unitss
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.70

Part names

Tear secretion break upTimePtEye.leftQnSchirmer testTime (e.g. seconds)Point in time (spot)Left eye

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 29008-0 | HealthAssure