LOINCActiveBoth

LOINC Code 50039-7: 5-Methyltetrahydrofolate/Folate [Molar fraction]

50039-7 is a LOINC code used to identify 5-Methyltetrahydrofolate/Folate [Molar 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 5-Methyltetrahydrofolate/Folate. 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 5-Methyltetrahydrofolate/Folate. 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

  • 5-Methyltetrahydrofolate/Folate in Serum or Plasma
  • 5-Methyltetrahydrofolate/Folate
  • 5Me-tetrahydrofolate; 5MTHF; Chemistry; Folat; Folic acid; Percent; Pl; Plasma; Plsm; Point in time; Pteroylglutamate; Pteroylglutamic acid; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance fraction; 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

5-Methyltetrahydrofolate/Folate [Molar fraction]5-Methyltetrahydrofolate/Folate in Serum or Plasma5Me-tetrahydrofolate/Folate SFr SerPl5-Methyltetrahydrofolate/FolateCHEM5-Methyltetrahydrofolate/Folate, BloodSFr

Frequently asked questions

Code details

Code50039-7
SystemLOINC
Display name5-Methyltetrahydrofolate/Folate [Molar fraction]
Description5-Methyltetrahydrofolate/Folate
Short name5Me-tetrahydrofolate/Folate SFr SerPl
Component5-Methyltetrahydrofolate/Folate
PropertySFr
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example units%
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.70

Consumer names

5-Methyltetrahydrofolate/Folate, Blood

Part names

5-Methyltetrahydrofolate/FolateSFrPtSer/PlasQnSubstance FractionPoint 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 50039-7 | HealthAssure