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.

LOINCActiveObservation

LOINC Code 93315-0: Platelet CD49b actual/normal FC (Bld) [Relative ratio]

Name: LOINC Code 93315-0: Platelet CD49b actual/normal FC (Bld) [Relative ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:23.053Z

93315-0 is a LOINC code used to identify Platelet CD49b actual/normal FC (Bld) [Relative ratio] 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 Platelet CD49b actual/normal. 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 Platelet CD49b actual/normal. 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: Flow cytometry

What it does not mean

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

Key facts

Platelet CD49b actual/normal in Blood by Flow cytometry (FC)
Platelet CD49b actual/normal
This term is built for but not restricted in use to a test that measures the mean fluorescent intensity (MFI) on platelets after binding of a specific fluorochrome labeled antibody.
Act/Nor; Alpha-2 integrin chain; Antigen, CD49b; Blood; CD49b Antigen; CD49b Antigens; CELL MARKERS; Control; Dynamic; FC; Glycoprotein Ia, Platelet; GPIa; Pl; Platelet Glycoprotein Ia; Platelets; Platelt; Plt; Plt CD49b; Plt CD49b Act/Nor; Point in time; QNT; Quan; Quant; Quantitative; Random; Relative ratio; Thrombocyte; Thrombocytes; VLA-2 alpha chain; 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

Platelet CD49b actual/normal FC (Bld) [Relative ratio]Platelet CD49b actual/normal in Blood by Flow cytometry (FC)Plt CD49b Act/Nor Bld FCPlatelet CD49b actual/normalCELLMARKPlatelet CD49b actual/normal, BloodRelRto

Frequently asked questions

Code details

Code93315-0

SystemLOINC

Display namePlatelet CD49b actual/normal FC (Bld) [Relative ratio]

DescriptionPlatelet CD49b actual/normal

Short namePlt CD49b Act/Nor Bld FC

ComponentPlatelet CD49b actual/normal

PropertyRelRto

TimingPt

System (specimen)Bld

ScaleQn

MethodFlow cytometry

ClassCELLMARK

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.67

Last changed2.67

Consumer names

Platelet CD49b actual/normal, Blood

Part names

Platelet CD49b actual/normalRelRtoPtBldQnFlow cytometryRelative RatioPoint in time (spot)BloodFlow cytometry (FC)

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.