DIAGNOSTIC TEST PANEL 535

Small Fiber Neuropathy (SFN)

Diagnostic test panel for antibodies against FGFR3, TS-HDS, and Plexin D1. For small fiber neuropathy and suspicion of inflammatory sensory neuropathy.

Indication

Small fiber neuropathy and suspicion of inflammatory sensory neuropathy.

Clinical background

IgM-antibodies against TS-HDS are reported in a subgroup of patients with small fiber neuropathy (SFN) with unknown underlying cause. These antibodies activate complement and immune therapy may be effective, clinical trials are ongoing. TS-HDS IgM seems to be more frequent and specific for SFN than IgG-antibodies against fibroblast growth factor receptor 3 (FGFR3). Antibodies against FGFR3 have been reported in patients with autoimmune diseases and concomitant sensory neuropathy. Plexin D1 antibodies have been detected in patients with burning pain and thermal hyperalgesia. The symptoms often respond to immunotherapies.

References

  • Farhad K. Current Diagnosis and Treatment of Painful Small Fiber Neuropathy. Curr Neurol Neurosci Rep. 2019 Nov 26;19(12):103. PMID: 31773305.
  • Levine TD, et al. Muscle Nerve. 2020 Apr;61(4):512-515. doi: 10.1002/mus.26748. Epub 2019 Nov 6. PMID: 31650561.
  • Zeidman LA. Advances in the Management of Small Fiber Neuropathy. Neurol Clin. 2021 Feb;39(1):113-131. PMID: 33223078.
  • Antoine JC, et al. Antifibroblast growth factor receptor 3 antibodies identify a subgroup of patients with sensory neuropathy. J Neurol Neurosurg Psychiatry. 2015 Dec;86(12):1347-55. doi: 10.1136/jnnp-2014-309730. Epub 2015 Jan 27. PMID: 25628376. 

Tests included in panel

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How to order

This test panel is available worldwide for hospitals, clinics, and physicians.

  1. Print and complete the request form

    Download the request form. Clearly state the name and phone number of the referring hospital, clinic, or physician.

  2. Prepare your samples

    Serum: At least 0.5 mL serum (plain serum tubes without additives).

  3. Send samples and request form

    Within Sweden
    Samples can be sent at room temperature to:
    Envelopes and smaller boxes:
    Wieslab AB, Box 50117, 20211 Malmö, Sweden

    Larger boxes and frozen samples:
    Wieslab AB, Lundavägen 151, 21224 Malmö, Sweden

    International
    Send samples cold to:
    Wieslab AB, Lundavägen 151, 21224 Malmö, Sweden

Read our sampling instructions for more information

Last updated: 2025-08-18