LOINCActiveBoth

LOINC Code 51987-6: Coenzyme Q10 Ql

51987-6 is a LOINC code used to identify Coenzyme Q10 Ql 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 Ubiquinone 10. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Ubiquinone 10. It is commonly used with the system or sample type Ser/Plas.

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

  • Coenzyme Q10 [Presence] in Serum or Plasma
  • Ubiquinone 10
  • Chemistry; Coenzyme Q10; CoQ10; CO-Q10; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Screen; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Ubiquinone10

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

Coenzyme Q10 QlCoenzyme Q10 [Presence] in Serum or PlasmaUbiquinone10 SerPl QlUbiquinone 10CHEMCoenzyme Q10, BloodPrThr

Frequently asked questions

Code details

Code51987-6
SystemLOINC
Display nameCoenzyme Q10 Ql
DescriptionUbiquinone 10
Short nameUbiquinone10 SerPl Ql
ComponentUbiquinone 10
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleOrd
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.24
Last changed2.73

Consumer names

Coenzyme Q10, Blood

Part names

Ubiquinone 10PrThrPtSer/PlasOrdCoenzyme Q10Presence or ThresholdPoint in time (spot)Serum or Plasma

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.

LOINC Code 51987-6 | HealthAssure