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Immunophenotyping by Flow Cytometry CD41a Test

DNA Labs India | ISO 9001:2015 Certified

Immunophenotyping by Flow Cytometry CD41a Test

Short Name: CD41a Test

Also known as: CD41a Flow Cytometry Test, Platelet Immunophenotyping

Immunophenotyping by Flow Cytometry CD41a Test test available at DNA Labs India for ₹3,500. Uses Flow Cytometry on Whole blood or Bone marrow samples. Results in Same day report available as per sample receipt.. Free home collection in 300+ cities across India.

Diagnostic Test🏠 Home Collection

✍️ Written By

🩺 Medically Reviewed By

Dr Pasupathy Arumugam

Dr Pasupathy Arumugam

Consultant Pathologist · Reg: 21521

Last reviewed: September 7, 2026

Overview

The purpose of the CD41a test is to evaluate platelet function and diagnose platelet disorders by using flow cytometry to detect CD41a expression, aiding in conditions like ITP and TTP.

Test Code
1079
Price
₹3,500
Sample Type
Whole blood or Bone marrow
Result Time
Same day report available as per sample receipt.
Fasting Required
No
Method
Flow Cytometry
Step 1

Sample Collection

Give brief clinical history.

Method: Venipuncture or bone marrow aspiration

Step 2

Laboratory Analysis

Standard phlebotomy or bone marrow aspiration procedure.

Step 3

Report Delivery

Ship immediately; do not refrigerate or freeze.

Timeline: Same day report available as per sample receipt.

Patient Instructions

1
Before the Test:No specific preparation required, but provide clinical history.
2
During the Test:Blood sample will be drawn via venipuncture or bone marrow collected via aspiration.
3
After the Test:Resume normal activities; apply pressure to collection site to prevent bleeding.

About This Test

Who Should Get This Test

The purpose of the CD41a test is to evaluate platelet function and diagnose platelet disorders by using flow cytometry to detect CD41a expression, aiding in conditions like ITP and TTP.

How to Prepare

  • Collect 3 mL whole blood in EDTA tube and 3 mL in Sodium Heparin tube, or 2 mL bone marrow in Sodium Heparin tube.
  • Ship immediately at specified temperature.
  • Do not refrigerate or freeze.
  • Specify time, date, and clinical details on test request form.

Doctor's Notes

Reviewed by — MBBS, MD (Pathology) · Reg. No. 21521

"Early diagnosis of platelet disorders through CD41a testing is essential for timely management and prevention of complications."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeWhole blood or Bone marrow
Sample Volume3 mL whole blood or 2 mL bone marrow
ContainerLavender Top (EDTA) and Green Top (Sodium Heparin) tubes
Collection MethodVenipuncture or bone marrow aspiration

Sample Stability

Room Temperature24 hours
RefrigeratorNot applicable
FrozenNot applicable
Sample Rejection Criteria:
  • Sample refrigerated or frozen
  • Hemolyzed sample
  • Incorrect anticoagulant
  • Insufficient sample volume

Understanding Your Results

Results of the CD41a test are interpreted in the context of clinical symptoms and other laboratory findings.
📊

Normal CD41a expression

Platelet function likely normal

📊

Decreased CD41a expression

May indicate platelet disorders such as Glanzmann thrombasthenia or Bernard-Soulier syndrome

⚠️ When to Consult a Doctor:

If you experience symptoms of platelet disorders or have abnormal test results, consult a hematologist for further evaluation and management.

Limitations

  • ⚠Cannot diagnose all platelet disorders alone; clinical correlation needed
  • ⚠Results may require interpretation in context of other tests

Risks & Considerations

  • ●Slight pain or bruising at collection site
  • ●Rare infection risk
  • ●For bone marrow, soreness at aspiration site

Interfering Factors

  • ●Hemolyzed samples
  • ●Improper storage temperature
  • ●Delayed sample processing
  • ●Use of incorrect anticoagulant

Frequently Asked Questions

What is the CD41a test?
The CD41a test is a flow cytometry-based immunophenotyping test that evaluates platelet function by detecting CD41a glycoprotein expression on platelets and megakaryocytes.
Why is the CD41a test recommended?
It is recommended to diagnose platelet disorders such as ITP, TTP, von Willebrand disease, and others when symptoms like easy bruising or prolonged bleeding occur.
How is the CD41a test performed?
The test involves collecting a blood or bone marrow sample, which is then analyzed using flow cytometry with fluorescent antibodies to detect CD41a markers.
What does a positive CD41a result mean?
A positive result may indicate normal platelet function, but interpretation depends on clinical context; abnormal results suggest platelet disorders requiring further evaluation.
Are there any risks associated with the CD41a test?
Risks are minimal and include slight pain, bruising, or rare infection at the collection site; bone marrow aspiration may cause soreness.
How should I prepare for the CD41a test?
No specific preparation is needed, but provide your clinical history and inform the lab about any medications or conditions.
What is the cost of the CD41a test?
The cost is INR 3500 at DNA Labs India, which includes home sample collection and report delivery.
Is home sample collection available for the CD41a test?
Yes, DNA Labs India offers free home sample collection for online bookings across many cities in India.
How long does it take to get CD41a test results?
Results are typically available the same day, with reports delivered via online portal, email, or WhatsApp.
Can the CD41a test diagnose von Willebrand disease?
Yes, the CD41a test can help diagnose von Willebrand disease as part of a comprehensive evaluation of platelet disorders.
What symptoms indicate the need for a CD41a test?
Symptoms like easy bruising, bleeding gums, nosebleeds, heavy menstrual periods, or excessive bleeding after injury may indicate the need for this test.
How accurate is the CD41a test?
The CD41a test is accurate when performed correctly, but results should be correlated with clinical findings and other tests for precise diagnosis.
Worried about the process? Our certified phlebotomists collect thousands of samples every month across India. The process takes under 5 minutes and is virtually painless. Questions? Message us on WhatsApp — we're here 7 days a week.

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We serve as a reference laboratory for hospitals and clinics across India. Send samples from your facility with same-day pickup, priority processing, and results delivered through our online portal. Competitive institutional pricing available.

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