LOINCActiveObservation

LOINC Code 90916-8: Arachidonate (C20:4w6)/Fatty acids.C14-C22 (Bld) [Mass fraction]

90916-8 is a LOINC code used to identify Arachidonate (C20:4w6)/Fatty acids.C14-C22 (Bld) [Mass fraction] 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 Arachidonate/Fatty acids.C14-C22. It is commonly used with the system or sample type Bld.

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 Arachidonate/Fatty acids.C14-C22. It is commonly used with the system or sample type Bld.

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

Arachidonate (C204w6)/Fatty acids.C14-C22 in Blood
Arachidonate/Fatty acids.C14-C22
5,8,11,14 Eicosatetraenoic acid; AA; Acd; Acid; Arachidonic acid; Arch acid; Blood; C204w6; Chemistry; Eicosatetraenoate; Fatty acid; Lipid; Mass fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; WB; Whole blood

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

Arachidonate (C20:4w6)/Fatty acids.C14-C22 (Bld) [Mass fraction]Arachidonate (C20:4w6)/Fatty acids.C14-C22 in BloodAA/Fatty acids.C14-C22 MFr BldArachidonate/Fatty acids.C14-C22CHEMArachidonate (C20:4w6)/Fatty Acids.C14-C22, BloodMFr

Frequently asked questions

Code details

Code90916-8
SystemLOINC
Display nameArachidonate (C20:4w6)/Fatty acids.C14-C22 (Bld) [Mass fraction]
DescriptionArachidonate/Fatty acids.C14-C22
Short nameAA/Fatty acids.C14-C22 MFr Bld
ComponentArachidonate/Fatty acids.C14-C22
PropertyMFr
TimingPt
System (specimen)Bld
ScaleQn
ClassCHEM
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.65
Last changed2.65

Consumer names

Arachidonate (C20:4w6)/Fatty Acids.C14-C22, Blood

Part names

Arachidonate/Fatty acids.C14-C22MFrPtBldQnMass fractionPoint in time (spot)Blood

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.