LOINC Code 85382-0: Osmolarity (Tear) [Osmolarity]

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 Osmolarity. It is commonly used with the system or sample type Tear.

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

• Osmolarity in Tear
• Osmolarity
• The osmolarity or concentration of the ocular tear fluid will indicate if the patient is being affected by dry eye disease, which would result in a hyperosmolar tear fluid caused by either the reduction of tear fluid production by the lacrimal gland or the abnormal increase in evaporation of the tear fluid on the surface of the eye. A hyperosmolar tear film is toxic to the ocular surface resulting in cell damage, apoptosis, inflammation and an unstable tear film contributing to abnormal visual acuity. This term was created for, but is not limited in use to, the submitter's TearLab Osmolarity System.
• Chemistry; Point in time; QNT; Quan; Quant; Quantitative; Random; Tears

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

Frequently asked questions