LOINCActiveBoth

LOINC Code 40665-2: Reticulocytes Manual cnt (Bld) [#/Vol]

40665-2 is a LOINC code used to identify Reticulocytes Manual cnt (Bld) [#/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 Reticulocytes. It is commonly used with the system or sample type Bld.

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 Reticulocytes. 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
  • Method: Manual count

What it does not mean

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

Key facts

  • Reticulocytes [#/volume] in Blood by Manual count
  • Reticulocytes
  • #; ABS; absolute; absolutes; Blood; Cnt; Count; Count/volume; CT; Hematology; HEMATOLOGY/CELL COUNTS; Heme; Manl; Number concentration; Number Concentration (count/vol); Point in time; Polychromatophilic red cells; QNT; Quan; Quant; Quantitative; Random; Retic; Retics; Reticulocyte; 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

Reticulocytes Manual cnt (Bld) [#/Vol]Reticulocytes [#/volume] in Blood by Manual countRetics # ManualReticulocytesHEM/BCReticulocytes, BloodNCnc

Frequently asked questions

Code details

Code40665-2
SystemLOINC
Display nameReticulocytes Manual cnt (Bld) [#/Vol]
DescriptionReticulocytes
Short nameRetics # Manual
ComponentReticulocytes
PropertyNCnc
TimingPt
System (specimen)Bld
ScaleQn
MethodManual count
ClassHEM/BC
Example units10*9/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.73

Consumer names

Reticulocytes, Blood

Part names

ReticulocytesNCncPtBldQnManual countNumber 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 40665-2 | HealthAssure