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.

LOINCActiveBoth

LOINC Code 73675-1: Adenosine triphosphate/Adenosine diphosphate (Plts) [Entitic molar ratio]

Name: LOINC Code 73675-1: Adenosine triphosphate/Adenosine diphosphate (Plts) [Entitic molar ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:52.635Z

73675-1 is a LOINC code used to identify Adenosine triphosphate/Adenosine diphosphate (Plts) [Entitic molar ratio] 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 Adenosine triphosphate/Adenosine diphosphate. It is commonly used with the system or sample type Platelets.

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 Adenosine triphosphate/Adenosine diphosphate. It is commonly used with the system or sample type Platelets.

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: Both

What it does not mean

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

Key facts

Adenosine triphosphate/Adenosine diphosphate [Entitic molar ratio] in Platelets

Adenosine triphosphate/Adenosine diphosphate

Adenosine diphosphate (ADP) and adenosine triphosphate (ATP) is extracted from platelets. The submitter's lab performs a 2 step reaction to measure ATP and ADP (after conversion to ATP). The ADP/ATP ratio is then determined. ADP1.7 - 3.8 umol / 10^11 platelets ATP: 3.1 - 7.0 umol / 10^11 platelets ratio ATP/ADP <2.0 (dimensionless)

Adenosine 5'-Pyrophosphate; Adenosine 5'-triphosphate; Adenosine Pyrophosphate; ADO; ADP; ANED; ATP; Chemistry; Medication stress; Platelet; Plt; Plts; Point in time; QNT; Quan; Quant; Quantitative; Random; Thrb; Thrombocyte; Thrombocytes

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

Adenosine triphosphate/Adenosine diphosphate (Plts) [Entitic molar ratio]Adenosine triphosphate/Adenosine diphosphate [Entitic molar ratio] in PlateletsATP/ADP Plts-EntSRtoAdenosine triphosphate/Adenosine diphosphateCHEMAdenosine triphosphate/Adenosine Diphosphate, PlateletsEntSRto

Frequently asked questions

Code details

Code73675-1

SystemLOINC

Display nameAdenosine triphosphate/Adenosine diphosphate (Plts) [Entitic molar ratio]

DescriptionAdenosine triphosphate/Adenosine diphosphate

Short nameATP/ADP Plts-EntSRto

ComponentAdenosine triphosphate/Adenosine diphosphate

PropertyEntSRto

TimingPt

System (specimen)Platelets

ScaleQn

ClassCHEM

Example unitsumol/umol

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.44

Last changed2.61

Consumer names

Adenosine triphosphate/Adenosine Diphosphate, Platelets

Part names

Adenosine triphosphate/Adenosine diphosphateEntSRtoPtPlateletsQnEntitic substance ratioPoint 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.