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PTD - 291

Test Directory - Skin Antibodies

Synonyms

Pemphigus/pemphigoid antibodies

Clinical Indications

Skin antibodies are helpful in the investigation of bullous skin disorders. 

Request Form

Combined Pathology Blood form (Yellow/Black)

Availability

Analysed by referral laboratory if specific criteria met.

Specific Criteria

Requested by Consultant Dermatologist or agreed with Consultant Biochemist.

Patient Preparation

None required.

Turnaround Time

1 month

Specimen

Serum

Volume

1 ml

Container


Yellow top (SST) tube

Causes for Rejection

Unlabelled sample; insufficient clinical information.

Reference Range

Normal result = negative.

Interpretation

Positive results have an immunofluorescence pattern reported. Pemphigus antibodies react with the epidermal keratinocyte surface, giving a ‘chicken-wire’ pattern. Pemphigoid antibodies to the dermo-epidermal junction show a linear pattern

Bullous pemphigoid is mainly a disease of the elderly, antibody levels do not correlate with activity.

Pemphigus vulgaris is potentially fatal, antibody levels reflect disease activity.

Lab. Handling

Processing: Aliquot (MPA) and store at 4°C in separating fridge (CB39), referral rack.
Referral
: OSASK and send or BPRO and store at -20°C in separating freezer (CB40).


Version 1.0 / July 2014                                                                                                            Approved by: Consultant Biochemist