What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 105840-3: Were the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 days

Name: LOINC Code 105840-3: Were the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 days
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:19.665Z

105840-3 is a LOINC code used to identify Were the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 days 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 Were the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 days. It is commonly used with the system or sample type ^Patient.

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 Were the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 days. It is commonly used with the system or sample type ^Patient.

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

Were the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 days
Finding; Findings; II; Ordinal; PhenX; Point in time; QC mat sto -20 deg C & 2-8 deg C 30 days; Ql; Qual; Qualitative; Random; Screen

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

Were the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 daysQC mat sto -20 deg C & 2-8 deg C 30 daysPHENXFindPt^PatientOrd

Frequently asked questions

Code details

Code105840-3

SystemLOINC

Display nameWere the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 days

Short nameQC mat sto -20 deg C & 2-8 deg C 30 days

ComponentWere the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 days

PropertyFind

TimingPt

System (specimen)^Patient

ScaleOrd

ClassPHENX

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.78

Last changed2.78

Part names

Were the QC materials stored at -20 degrees Celsius or colder before being thawed and stored at 2-8 degrees Celsius and used within 30 daysFindPt^PatientOrdFindingPoint 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.