Alopecia Areata Skin Punch Biopsy

About Alopecia Areata Skin Punch Biopsy

Alopecia Areata Skin Punch Biopsy for Autoimmune Hair Follicle Research

Alopecia Areata Skin Punch Biopsy samples are collected from IRB-consented donors with a clinically confirmed diagnosis of alopecia areata by licensed clinicians under aseptic conditions. Alopecia areata is an autoimmune disease of the hair follicle: the immune privilege that normally protects the anagen hair bulb collapses, MHC class I expression rises in follicular epithelium, and CD8+ T cells attack the follicle, producing non-scarring hair loss. Skin punch biopsy is the only specimen that shows this lesion in situ.

Why Skin Punch Biopsy for Alopecia Areata Research

• The defining histological finding is a dense peribulbar lymphocytic infiltrate around anagen follicles — the classic “swarm of bees” appearance. Its spatial relationship to the follicular bulb is the lesion itself and cannot be reconstructed from blood.
• Horizontal sectioning of scalp punch biopsies permits quantitative follicular counts, terminal-to-miniaturised follicle ratios and anagen-to-telogen ratios, which are the standard morphometric endpoints in hair research.
• Tissue distinguishes alopecia areata from its principal differentials in a way clinical assessment often cannot: scarring alopecias destroy the follicle and replace it with fibrous tracts, while androgenetic alopecia shows miniaturisation without a peribulbar infiltrate.
• Interferon-gamma signalling through the JAK-STAT pathway is central to immune privilege collapse, and the JAK inhibitor class approved for severe alopecia areata acts on exactly this axis. In situ assessment of pathway activation and of the IFN-inducible chemokines CXCL9, CXCL10 and CXCL11 requires tissue.
• MHC class I and immune privilege marker immunostaining of the follicular epithelium is the direct readout of the mechanism that permits autoimmune attack.
• Lesional and non-lesional or unaffected scalp biopsies from the same donor provide an internal comparator for spatial transcriptomic and immunohistochemical work.

Donor Stratification Available

• Disease extent by SALT (Severity of Alopecia Tool) score where recorded
• Clinical subtype: patchy alopecia areata, ophiasis, alopecia totalis, or alopecia universalis
• Disease activity: actively progressing versus stable or regrowing patches
• Sample site: lesional, lesional margin, or non-lesional scalp
• Treatment status: treatment-naive, on JAK inhibitor, on intralesional or systemic corticosteroid, on topical immunotherapy, or in washout
• Comorbid autoimmune and atopic disease, including autoimmune thyroid disease, vitiligo and atopic dermatitis
• Disease duration and age at onset
• Matched healthy control scalp skin available

Product Features

• Research Use Only (RUO), fresh or frozen skin punch biopsies
• Samples are frozen (if requested) within 4 hours of collection
• Clinically confirmed alopecia areata donors
• Collected by licensed clinicians under aseptic conditions
• Processed and shipped same-day where applicable
• Lesional and non-lesional paired sampling available by request
• IRB-approved protocols and electronic informed consent

De-identified Donor Data

• Verified diagnosis of alopecia areata
• Donor demographics: age, sex assigned at birth, race/ethnicity
• Self-reported medication history and lesion site
• Disease activity and clinical history available upon request

Applications

• Histological characterisation of the peribulbar lymphocytic infiltrate
• Horizontal-section morphometry: follicular counts, terminal-to-miniaturised ratio, anagen-to-telogen ratio
• Immunohistochemistry and immunofluorescence for CD8, NKG2D and MHC class I in follicular epithelium
• In situ assessment of IFN-gamma and JAK-STAT pathway activation
• IFN-inducible chemokine localisation, including CXCL9 and CXCL10
• Spatial transcriptomic and single-cell profiling of lesional versus non-lesional scalp
• Differential comparison against scarring and androgenetic alopecia tissue
• Biomarker discovery and therapeutic target validation for hair loss disorders

Other Alopecia Areata Specimen Types

• Alopecia Areata PBMCs
• Alopecia Areata Whole Blood
• Alopecia Areata Leukopak
• Alopecia Areata Bulk Plasma
• Androgenic Alopecia Skin Punch Biopsy (comparator)
• Scarring Alopecia Skin Punch Biopsy (comparator)

Compliance and Quality Assurance

• IRB-approved collections and SOP-driven processing
• 21 CFR Part 11-compliant electronic informed consent
• HIPAA-compliant donor data management

Ordering & Customization

Alopecia Areata Skin Punch Biopsy samples can be shipped ambient, refrigerated, or on dry ice. For pricing, availability, or to discuss lesional and non-lesional paired sampling, contact learnmore@sanguinebio.com. For orders outside the United States or regulatory documentation, please contact us to confirm regional compliance. To browse biopsies across all disease states, visit our human skin punch biopsy page.