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.

LOINCActiveOrder

LOINC Code 79572-4: Folate and tryptophan and metabolites panel (CSF)

Name: LOINC Code 79572-4: Folate and tryptophan and metabolites panel (CSF)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:01.837Z

79572-4 is a LOINC code used to identify Folate and tryptophan and metabolites panel (CSF) 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 Folate & tryptophan & metabolites panel. It is commonly used with the system or sample type CSF.

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 Folate & tryptophan & metabolites panel. It is commonly used with the system or sample type CSF.

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: Order
Panel type: Panel

What it does not mean

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

Key facts

Folate and tryptophan and metabolites panel - Cerebral spinal fluid

Folate & tryptophan & metabolites panel

Testing for folate and its metabolites as well as tryptophan and its metabolites in CSF can be useful in distinguishing among various central nervous system disorders associated with folate deficiency. Low folate levels are associated with inborn errors of metabolism, including cerebral folate deficiency (CFD), a neurological syndrome that occurs around 2-4 months of age and is primarily associated with associated with low levels of 5-methyltetrahydrofolate (5-MTHF) in the CSF with normal folate levels in the plasma and red blood cells.[PMID19260931] Low folate levels are also associated with depression and dementia in elderly patients.[PMID: 11183038] Serotonin, which is formed from tryptophan, may be the link between folate and depression or dementia. Many patients with neuropsychiatric disorders and folate deficiency have also been found to have low levels of 5-hydroxyindoleacetic acid (5-HIAA, a serotonin metabolite), and patients with 5,10-methylenetetrahydrofolate reductase (MTHFR) deficiency also have decreased serotonin synthesis. [PMCID: 1810582]

c244; Cerebral spinal fluid; Cerebrospinal Fl; Chemistry; Folat; Folate + Tryp + Metabs Pnl; Folic acid; L-tryptophan; Metabolite; Metb; Pan; PANEL.CHEMISTRY; Panl; Pnl; Point in time; Pteroylglutamate; Pteroylglutamic acid; Random; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Trp; Vit M; Vitamin M

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

Folate and tryptophan and metabolites panel (CSF)Folate and tryptophan and metabolites panel - Cerebral spinal fluidFolate + Tryp + Metabs Pnl CSFFolate & tryptophan & metabolites panelPANEL.CHEMFolate and Tryptophan and Metabolites panel, Spinal fluid-

Frequently asked questions

Code details

Code79572-4

SystemLOINC

Display nameFolate and tryptophan and metabolites panel (CSF)

DescriptionFolate & tryptophan & metabolites panel

Short nameFolate + Tryp + Metabs Pnl CSF

ComponentFolate & tryptophan & metabolites panel

Property-

TimingPt

System (specimen)CSF

Scale-

ClassPANEL.CHEM

StatusACTIVE

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.54

Consumer names

Folate and Tryptophan and Metabolites panel, Spinal fluid

Part names

Folate & tryptophan & metabolites panel-PtCSFFolate and tryptophan and metabolites panelPoint in time (spot)Cerebral spinal fluid

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.