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.

LOINCActiveBoth

LOINC Code 20775-3: Colony count Viability count FDA method Qn (Specimen)

Name: LOINC Code 20775-3: Colony count Viability count FDA method Qn (Specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.850Z

20775-3 is a LOINC code used to identify Colony count Viability count FDA method Qn (Specimen) 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 Colony count. It is commonly used with the system or sample type XXX.

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 Colony count. It is commonly used with the system or sample type XXX.

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
Method: Viability count.FDA method

What it does not mean

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

Key facts

Colony count [Units/volume] in Specimen by Viability count FDA method
Colony count
Arbitrary concentration; CC; Colonies; ID; Infectious Disease; InfectiousDisease; Microbiology; Misc; Miscellaneous; Other; Point in time; QNT; Quan; Quant; Quantitative; Random; Spec; To be specified in another part of the message; Unspecified; Viab Cnt; Viab Cnt FDA

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

Colony count Viability count FDA method Qn (Specimen)Colony count [Units/volume] in Specimen by Viability count FDA methodCC Spec Viab Cnt FDA-aCncColony countMICROColony count, SpecimenACnc

Frequently asked questions

Code details

Code20775-3

SystemLOINC

Display nameColony count Viability count FDA method Qn (Specimen)

DescriptionColony count

Short nameCC Spec Viab Cnt FDA-aCnc

ComponentColony count

PropertyACnc

TimingPt

System (specimen)XXX

ScaleQn

MethodViability count.FDA method

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.69

Consumer names

Colony count, Specimen

Part names

Colony countACncPtXXXQnViability count.FDA methodArbitrary ConcentrationPoint in time (spot)Viability count FDA method

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.