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 104641-6: Time below range, low Calc (Reporting Period Interstitial fluid)

Name: LOINC Code 104641-6: Time below range, low Calc (Reporting Period Interstitial fluid)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:19.128Z

104641-6 is a LOINC code used to identify Time below range, low Calc (Reporting Period Interstitial fluid) 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 Time below range, low. It is commonly used with the system or sample type Interstitial fluid.

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 Time below range, low. It is commonly used with the system or sample type Interstitial fluid.

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
Method: Calculated

What it does not mean

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

Key facts

Time below range, low in Reporting Period Interstitial fluid by calculation
Time below range, low
Calc; Calculation; Chemistry; Interstitial fld; QNT; Quan; Quant; Quantitative; Report period; Rnge; Time <range

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

Time below range, low Calc (Reporting Period Interstitial fluid)Time below range, low in Reporting Period Interstitial fluid by calculationTime hypoglycemic RptPrd IntrsttlTime below range, lowCHEMTime below range, low, Interstitial fluidTimeFr

Frequently asked questions

Code details

Code104641-6

SystemLOINC

Display nameTime below range, low Calc (Reporting Period Interstitial fluid)

DescriptionTime below range, low

Short nameTime hypoglycemic RptPrd Intrsttl

ComponentTime below range, low

PropertyTimeFr

TimingRptPeriod

System (specimen)Interstitial fluid

ScaleQn

MethodCalculated

ClassCHEM

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.79

Last changed2.79

Consumer names

Time below range, low, Interstitial fluid

Part names

Time below range, lowTimeFrRptPeriodInterstitial fluidQnCalculatedTime FractionReporting Period

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.