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LOINC Code 48386-7: Platelets Large/Platelets Auto (Bld)

48386-7 is a LOINC code used to identify Platelets Large/Platelets Auto (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 Platelets.large/Platelets. 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 Platelets.large/Platelets. 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
  • Method: Automated count

What it does not mean

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

Key facts

Platelets Large/Platelets in Blood by Automated count
Platelets.large/Platelets
Platelet large cell ratio (P-LCR) is the ratio of platelets larger than 12 fL and smaller than 30 fL divided by the total number of platelets counted (fL (femtoliter) is the metric unit of volume equal to 10*-15 liters). P-LCR is one of the platelet volume indices estimated by automated blood cell analyzers and useful for various diagnoses of abnormal platelet counts. An elevated P-LCR is seen in patients with hyperlipidemia and suggests the possible risk of thrombosis. Larger platelets are more reactive and may add to vaso-occlusive events in patients with dyslipidemia. P-LCR may be useful as an indicator of risk for thromboembolic ischemia events.[PMID15485465]
Auto; Automated detection; Blood; Elec; Elect; Electr; HEMATOLOGY/CELL COUNTS; Lg Platelets; Number Fraction; Percent; Platelet; Platelt; Plt; Point in time; QNT; Quan; Quant; Quantitative; Random; Thrb; Thrombocyte; Thrombocytes; 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

Platelets Large/Platelets Auto (Bld)Platelets Large/Platelets in Blood by Automated countLg Platelets/Platelet NFr Bld AutoPlatelets.large/PlateletsHEM/BCPlatelets large/Platelets, BloodNFr

Frequently asked questions

Code details

Code48386-7
SystemLOINC
Display namePlatelets Large/Platelets Auto (Bld)
DescriptionPlatelets.large/Platelets
Short nameLg Platelets/Platelet NFr Bld Auto
ComponentPlatelets.large/Platelets
PropertyNFr
TimingPt
System (specimen)Bld
ScaleQn
MethodAutomated count
ClassHEM/BC
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.58

Consumer names

Platelets large/Platelets, Blood

Part names

Platelets.large/PlateletsNFrPtBldQnAutomated countNumber 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 48386-7 | HealthAssure