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 26013-3: 17-Hydroxycorticosteroids 2 days post Unsp challenge (24H U) [Moles/Time]

Name: LOINC Code 26013-3: 17-Hydroxycorticosteroids 2 days post Unsp challenge (24H U) [Moles/Time]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:13.651Z

26013-3 is a LOINC code used to identify 17-Hydroxycorticosteroids 2 days post Unsp challenge (24H U) [Moles/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 17-Hydroxycorticosteroids^2D post XXX challenge. It is commonly used with the system or sample type Urine.

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 17-Hydroxycorticosteroids^2D post XXX challenge. It is commonly used with the system or sample type Urine.

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

17-Hydroxycorticosteroids [Moles/time] in 24 hour Urine --2 days post XXX challenge
17-Hydroxycorticosteroids^2D post XXX challenge
1 day; 17-CS; 17-hydroxy corticosteroids; 17OHCS; 17-OHCS; 24 hours; 24HR; 2D p chal; After; CHEMISTRY.CHALLENGE TESTING; p chal; PST; QNT; Quan; Quant; Quantitative; sRate; Substance Rate; UA; UR; Urn

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

17-Hydroxycorticosteroids 2 days post Unsp challenge (24H U) [Moles/Time]17-Hydroxycorticosteroids [Moles/time] in 24 hour Urine --2 days post XXX challenge17OHCS 2D p chal 24h Ur-sRate17-Hydroxycorticosteroids^2D post XXX challengeCHAL17-Hydroxycorticosteroids 2 days after challenge, UrineSRat

Frequently asked questions

Code details

Code26013-3

SystemLOINC

Display name17-Hydroxycorticosteroids 2 days post Unsp challenge (24H U) [Moles/Time]

Description17-Hydroxycorticosteroids^2D post XXX challenge

Short name17OHCS 2D p chal 24h Ur-sRate

Component17-Hydroxycorticosteroids^2D post XXX challenge

PropertySRat

Timing24H

System (specimen)Urine

ScaleQn

ClassCHAL

Example unitsumol/d

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.40

Consumer names

17-Hydroxycorticosteroids 2 days after challenge, Urine

Part names

17-Hydroxycorticosteroids^2D post XXX challengeSRat24HUrineQnSubstance Rate24 hours

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.