LOINCActiveBoth

LOINC Code 80550-7: Tacrolimus (DBS) [Mass/Vol]

80550-7 is a LOINC code used to identify Tacrolimus (DBS) [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 Tacrolimus. It is commonly used with the system or sample type Bld.dot.

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 Tacrolimus. It is commonly used with the system or sample type Bld.dot.

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

Tacrolimus [Mass/volume] in DBS
Tacrolimus
Dried blood spot (DBS) specimens have been used for therapeutic drug monitoring (TDM) across several classes of drugs including antimicrobials, anticonvulsants and immunosuppressants. DBS specimens are useful for TDM in infants and children due to the small sample volume required. DBS specimens are also useful for outpatient TDM in adults who have been trained to collect their own DBS because most analytes are relatively stable in DBS and the DBS card does not require specialized transportation. [PMID25204403]
Blood; DBS; Dried blood spot; DRUG/TOXICOLOGY; Drugs; Filter paper; FK506; FK-506; FP; Fujimycin; Hecoria; L04AD02; Level; Mass concentration; Point in time; Prograf; Protopic; 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

Tacrolimus (DBS) [Mass/Vol]Tacrolimus [Mass/volume] in DBSTacrolimus DBS-mCncTacrolimusDRUG/TOXTacrolimus, Dried blood spotMCnc

Frequently asked questions

Code details

Code80550-7
SystemLOINC
Display nameTacrolimus (DBS) [Mass/Vol]
DescriptionTacrolimus
Short nameTacrolimus DBS-mCnc
ComponentTacrolimus
PropertyMCnc
TimingPt
System (specimen)Bld.dot
ScaleQn
ClassDRUG/TOX
Example unitsug/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.61

Consumer names

Tacrolimus, Dried blood spot

Part names

TacrolimusMCncPtBld.dotQnMass ConcentrationPoint in time (spot)DBS

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 80550-7 | HealthAssure