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LOINC Code 2628-6: Methylenetetrahydrofolate dehydrogenase NADP (S) [Catalytic activity/Vol]

2628-6 is a LOINC code used to identify Methylenetetrahydrofolate dehydrogenase NADP (S) [Catalytic activity/Vol] 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 Methylenetetrahydrofolate dehydrogenase.NADP. It is commonly used with the system or sample type Ser.

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 Methylenetetrahydrofolate dehydrogenase.NADP. It is commonly used with the system or sample type Ser.

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

  • Methylenetetrahydrofolate dehydrogenase NADP [Enzymatic activity/volume] in Serum
  • Methylenetetrahydrofolate dehydrogenase.NADP
  • Catalytic Concentration; Chemistry; Dehydrog; Dehyrdogenase; MTD.NADP; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR

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

Methylenetetrahydrofolate dehydrogenase NADP (S) [Catalytic activity/Vol]Methylenetetrahydrofolate dehydrogenase NADP [Enzymatic activity/volume] in SerumMTD.NADP Ser-cCncMethylenetetrahydrofolate dehydrogenase.NADPCHEMMethylenetetrahydrofolate Dehydrogenase NADP, BloodCCnc

Frequently asked questions

Code details

Code2628-6
SystemLOINC
Display nameMethylenetetrahydrofolate dehydrogenase NADP (S) [Catalytic activity/Vol]
DescriptionMethylenetetrahydrofolate dehydrogenase.NADP
Short nameMTD.NADP Ser-cCnc
ComponentMethylenetetrahydrofolate dehydrogenase.NADP
PropertyCCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassCHEM
Example unitsarb U/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.68

Consumer names

Methylenetetrahydrofolate Dehydrogenase NADP, Blood

Part names

Methylenetetrahydrofolate dehydrogenase.NADPCCncPtSerQnMethylenetetrahydrofolate dehydrogenase NADPCatalytic ConcentrationPoint in time (spot)Serum

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.