CD-138 Immunohistochemistry Test at Lahore PCR Lab

CD-138 Immunohistochemistry at Lahore PCR Lab

CD-138 Immunohistochemistry (IHC) is a highly specialized, state-of-the-art diagnostic pathology test performed at Lahore PCR Lab in Lahore, Pakistan. This advanced diagnostic tool is designed to detect the presence and distribution of the CD-138 antigen, also known as Syndecan-1, on the surface of specific cells within tissue specimens. CD-138 is a transmembrane heparan sulfate proteoglycan that plays a critical role in cell-to-cell adhesion, cell-matrix interactions, and the regulation of cell growth. In clinical pathology, CD-138 serves as an exceptionally reliable and sensitive marker for plasma cells, making this immunohistochemical stain indispensable for diagnosing a wide range of inflammatory, gynecological, and hematological conditions.

The primary clinical value of CD-138 Immunohistochemistry lies in its ability to identify plasma cells that are otherwise difficult or impossible to distinguish using standard Hematoxylin and Eosin (H&E) staining. In endometrial tissue, the presence of even a single plasma cell can confirm a diagnosis of chronic endometritis, a silent inflammatory condition strongly linked to unexplained infertility, recurrent pregnancy loss, and repeated in vitro fertilization (IVF) implantation failures. Furthermore, in hematopathology, CD-138 IHC is widely utilized to evaluate bone marrow biopsy specimens for plasma cell proliferative disorders, such as multiple myeloma and solitary plasmacytoma. By utilizing automated, high-precision staining technologies, Lahore PCR Lab ensures that patients and clinicians receive highly accurate, reproducible, and clinically actionable diagnostic reports.

Clinical Procedure: What to Expect

Patient Preparation

Because CD-138 Immunohistochemistry is a laboratory-based staining technique performed on tissue samples, patient preparation is entirely dependent on the specific clinical procedure used to obtain the tissue biopsy. Patients should follow these guidelines based on their scheduled procedure:

• Endometrial Biopsy: If the test is being performed to investigate infertility or chronic endometritis, the biopsy is typically scheduled during a specific phase of the menstrual cycle, often the mid-luteal phase. Patients should inform their gynecologist of any current medications, especially blood thinners or antiplatelet agents, which may need to be temporarily discontinued.
• Bone Marrow Biopsy: For patients undergoing bone marrow evaluation for suspected hematological malignancies, the procedure is performed under local anesthesia. Fasting is generally not required unless conscious sedation is planned. Patients should discuss anxiety management options with their physician beforehand.
• Submission of Pre-existing Tissue Blocks: If the biopsy has already been performed at another facility, patients can submit the Formalin-Fixed Paraffin-Embedded (FFPE) tissue block along with the original histopathology report directly to Lahore PCR Lab for CD-138 IHC staining. No direct patient preparation is required in this scenario.

During the Procedure

The laboratory phase of CD-138 Immunohistochemistry at Lahore PCR Lab involves a series of highly controlled, automated steps executed by skilled histotechnologists and evaluated by consultant pathologists:

• Tissue Sectioning: The paraffin-embedded tissue block is cut into ultra-thin sections, typically 3 to 4 micrometers thick, using a high-precision microtome. These sections are then mounted onto specialized, positively charged glass slides to prevent tissue detachment during processing.
• Deparaffinization and Rehydration: The tissue slides are heated and treated with clearing agents, such as xylene, followed by graded alcohols to remove the paraffin wax and restore water content to the tissue.
• Antigen Retrieval: To expose the CD-138 epitopes that may have been masked during formalin fixation, the slides undergo Heat-Induced Epitope Retrieval (HIER) using specialized buffer solutions at controlled high temperatures.
• Antibody Incubation: The tissue is incubated with highly specific, clinical-grade monoclonal antibodies directed against the CD-138 antigen. If CD-138 is present on the cell membranes, the antibodies bind tightly to these target sites.
• Detection and Visualization: A secondary detection system, usually polymer-based and conjugated with horseradish peroxidase (HRP), is applied. This is followed by the addition of a chromogen, typically diaminobenzidine (DAB), which produces a highly visible brown precipitate at the site of antibody binding. The slides are then counterstained with hematoxylin to provide cellular contrast.
• Pathological Evaluation: A consultant pathologist examines the stained slides under a high-resolution light microscope to assess the presence, intensity, and distribution of CD-138 expression, correlating the findings with the patient’s clinical history.

When is a CD-138 Immunohistochemistry Performed?

Evaluation of Chronic Endometritis in Infertility

Chronic endometritis is a persistent, low-grade inflammation of the endometrial lining of the uterus, often caused by common bacterial pathogens. It is frequently asymptomatic, yet it significantly alters endometrial receptivity, leading to unexplained infertility, recurrent pregnancy loss, and repeated IVF implantation failures. Because standard H&E staining can easily mistake endometrial stromal cells or inflammatory infiltrates for plasma cells, reproductive endocrinologists and gynecologists routinely request CD-138 IHC on endometrial biopsies. This test allows for the definitive identification of stromal plasma cells, enabling targeted antibiotic therapy that can dramatically improve subsequent pregnancy outcomes.

Diagnosis of Multiple Myeloma and Plasmacytoma

Multiple myeloma is a hematological malignancy characterized by the clonal proliferation of malignant plasma cells within the bone marrow. To establish a diagnosis, pathologists must accurately quantify the percentage of plasma cells in a bone marrow trephine biopsy. CD-138 is highly and consistently expressed on both normal and neoplastic plasma cells. Performing CD-138 IHC allows pathologists to clearly distinguish plasma cells from other bone marrow elements, accurately calculate the tumor burden, and differentiate multiple myeloma from monoclonal gammopathy of undetermined significance (MGUS) or reactive plasmacytosis.

Investigation of Recurrent Pregnancy Loss (RPL)

Recurrent pregnancy loss, defined as the loss of two or more consecutive pregnancies, is a deeply challenging clinical issue. Subclinical uterine inflammation is a recognized etiological factor. Obstetricians request CD-138 IHC on endometrial tissue obtained via biopsy or hysteroscopy to rule out chronic endometritis as an underlying cause of RPL. Identifying and treating this localized inflammatory state helps restore a healthy uterine microenvironment, supporting successful embryo implantation and early placental development in future pregnancies.

Characterization of Undifferentiated Neoplasms

In diagnostic oncology, pathologists occasionally encounter poorly differentiated or undifferentiated tumors that cannot be classified using standard histological stains. Because CD-138 is expressed on epithelial cells as well as plasma cells, it serves as a valuable component of an immunohistochemical panel. It helps differentiate plasmacytoid variants of carcinomas, plasmablastic lymphoma, and primary effusion lymphoma from other round cell tumors, ensuring that patients receive the correct, tumor-specific therapeutic protocols.

Monitoring Treatment Response in Plasma Cell Disorders

Following chemotherapy, immunotherapy, or autologous stem cell transplantation for multiple myeloma, patients undergo follow-up bone marrow biopsies to assess treatment efficacy. CD-138 IHC is utilized to detect minimal residual disease (MRD) and evaluate the reduction of plasma cell burden. The high sensitivity of CD-138 staining allows pathologists to identify tiny, isolated clusters of residual malignant plasma cells that might be missed on routine histological examinations, guiding subsequent maintenance therapy decisions.

What Does a CD-138 Immunohistochemistry Detect?

CD-138 Immunohistochemistry is highly sensitive and specific, capable of detecting a wide range of normal and pathological cellular features, including:

• Presence of endometrial stromal plasma cells, confirming chronic endometritis.
• Absence of plasma cells in endometrial tissue, ruling out active chronic endometritis.
• Clonal plasma cell infiltration within bone marrow trephine biopsies.
• Percentage of plasma cell involvement relative to total marrow cellularity.
• Normal physiological expression of CD-138 on mature plasma cells.
• Expression of CD-138 (Syndecan-1) on normal epithelial tissues.
• Loss of CD-138 expression in certain invasive epithelial carcinomas, indicating epithelial-mesenchymal transition (EMT).
• Plasmablastic differentiation in high-grade non-Hodgkin lymphomas.
• Solitary plasmacytoma of bone or extramedullary soft tissues.
• Primary effusion lymphoma cell populations.
• Quantifiable density of plasma cells per high-power field (HPF) in endometrial biopsies.
• Chronic inflammatory mucosal infiltrates in gastrointestinal biopsies.
• Distinction between decidualized stromal cells and true plasma cells in gestational endometrium.
• Minimal residual disease (MRD) in post-treatment myeloma patients.
• CD138-positive osteoblasts and stromal elements in bone specimens.
• Reactive plasmacytosis associated with chronic infections or autoimmune diseases.
• Expression patterns in lobular versus ductal breast carcinomas.
• Presence of plasma cells in chronic salivary gland inflammatory conditions.
• Plasma cell-rich acute interstitial nephritis in renal biopsy specimens.
• CD-138 expression in squamous cell carcinomas of the head and neck.

Turnaround Time and Report Access at Lahore PCR Lab

At Lahore PCR Lab, we understand that timely diagnostic results are crucial for reducing patient anxiety and initiating prompt medical treatment. The turnaround time for CD-138 Immunohistochemistry is typically 3 to 5 working days. This timeframe is necessary to complete the meticulous steps of tissue processing, antigen retrieval, automated staining, and detailed microscopic evaluation by our consultant pathologists.

Lahore PCR Lab offers convenient digital report access to ensure patients and referring physicians can retrieve results as soon as they are finalized. Once the diagnostic report is signed off by the pathologist, an automated SMS notification containing a secure link is sent to the patient’s registered mobile number. Reports can be viewed, downloaded, and printed directly from the Lahore PCR Lab online portal. Physical copies of the reports can also be collected from our main facility or designated collection centers across Lahore.

CD-138 Immunohistochemistry Findings Overview

Structure / Parameter Evaluated	Normal Findings	Possible Abnormal Findings
Endometrial Stroma	Zero CD-138 positive plasma cells identified.	Presence of 1 or more CD-138+ plasma cells (Diagnostic of Chronic Endometritis).
Bone Marrow Plasma Cells	Comprise less than 5% of total nucleated cells; scattered individually.	Plasma cells exceed 10% of cellularity, often in sheets or clusters (Suggestive of Multiple Myeloma).
Epithelial Tissues	Strong, uniform membranous CD-138 expression.	Reduced, fragmented, or absent expression in poorly differentiated carcinomas.
Lymph Node Architecture	Occasional plasma cells restricted to medullary cords.	Monoclonal sheets of CD-138+ cells indicating plasmacytoma or plasmablastic lymphoma.
Stromal Cells / Decidua	Negative for CD-138 expression.	Non-specific background staining (requires expert pathological differentiation).
Gastrointestinal Mucosa	Normal baseline population of scattered IgA-secreting plasma cells.	Marked increase or atypical clusters of plasma cells in chronic inflammatory bowel disease.
Soft Tissue / Extramedullary Sites	Absence of localized plasma cell aggregates.	Dense CD-138+ plasma cell infiltrates confirming extramedullary plasmacytoma.

Note: Diagnostic findings should always be interpreted by a qualified healthcare professional together with the patient’s symptoms, medical history, physical examination, laboratory investigations, previous imaging studies, and other relevant clinical information. Additional investigations or specialist consultation may be recommended depending on the findings.

Why Choose Lahore PCR Lab for CD-138 Immunohistochemistry?

• Experienced Healthcare Professionals: Our pathology department is led by highly qualified consultant pathologists with extensive expertise in histopathology and immunohistochemistry.
• Patient-Focused Care: We prioritize patient comfort, clear communication, and compassionate service throughout the diagnostic journey.
• Quality Diagnostic Services: Lahore PCR Lab adheres to strict national and international quality control standards to ensure the highest accuracy in tissue diagnostics.
• Professional Reporting: Our diagnostic reports are comprehensive, detailed, and structured to provide clear, actionable insights for referring clinicians.
• Modern Diagnostic Approach: We utilize advanced, automated staining platforms that minimize human error and ensure highly reproducible staining patterns.
• Comfortable Environment: Our facilities in Lahore are designed to provide a clean, safe, and comfortable environment for all patients.
• Convenient Location: Strategically located in Lahore, our main laboratory and collection centers are easily accessible to patients from all parts of the city.
• Commitment to Accurate Diagnosis: We are dedicated to delivering precise, evidence-based diagnostic results that form the foundation of effective patient treatment plans.