LOINCActiveObservation

LOINC Code 34917-5: Plasma cell precursor/Leukocytes (Bld)

34917-5 is a LOINC code used to identify Plasma cell precursor/Leukocytes (Bld) 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 Plasma cell precursor/Leukocytes. 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 Plasma cell precursor/Leukocytes. 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: Observation

What it does not mean

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

Key facts

  • Plasma cell precursor/Leukocytes in Blood
  • Plasma cell precursor/Leukocytes
  • Blood; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; WB; WBC; WBCs; White blood cell; White blood cells; 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

Plasma cell precursor/Leukocytes (Bld)Plasma cell precursor/Leukocytes in BloodPlasma cell prec NFr BldPlasma cell precursor/LeukocytesHEM/BCPlasma cell precursor/White Blood Cells, BloodNFr

Frequently asked questions

Code details

Code34917-5
SystemLOINC
Display namePlasma cell precursor/Leukocytes (Bld)
DescriptionPlasma cell precursor/Leukocytes
Short namePlasma cell prec NFr Bld
ComponentPlasma cell precursor/Leukocytes
PropertyNFr
TimingPt
System (specimen)Bld
ScaleQn
ClassHEM/BC
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.11
Last changed2.79

Consumer names

Plasma cell precursor/White Blood Cells, Blood

Part names

Plasma cell precursor/LeukocytesNFrPtBldQnNumber FractionPoint 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 34917-5 | HealthAssure