LOINCActiveBoth

LOINC Code 49115-9: Thiamine.free (Bld) [Mass/Vol]

49115-9 is a LOINC code used to identify Thiamine.free (Bld) [Mass/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 Thiamine.free. It is commonly used with the system or sample type Bld.

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 Thiamine.free. 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: Both

What it does not mean

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

Key facts

  • Thiamine.free [Mass/volume] in Blood
  • Thiamine.free
  • Blood; c106; c238; Chemistry; FR; Level; Mass concentration; Non-protein bound; Point in time; QNT; Quan; Quant; Quantitative; Random; Vit B1; Vit B-1; Vit B1 free; Vitamin B1; Vitamin B-1; 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

Thiamine.free (Bld) [Mass/Vol]Thiamine.free [Mass/volume] in BloodVit B1 free Bld-mCncThiamine.freeCHEMFree thiamine, BloodMCnc

Frequently asked questions

Code details

Code49115-9
SystemLOINC
Display nameThiamine.free (Bld) [Mass/Vol]
DescriptionThiamine.free
Short nameVit B1 free Bld-mCnc
ComponentThiamine.free
PropertyMCnc
TimingPt
System (specimen)Bld
ScaleQn
ClassCHEM
Example unitsng/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.73

Consumer names

Free thiamine, Blood

Part names

Thiamine.freeMCncPtBldQnMass ConcentrationPoint 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.

LOINC Code 49115-9 | HealthAssure