Blood Test For Rashes
Understand potential underlying factors affecting your skin with a targeted blood test for rashes at Dr Derme.
Our advanced laboratory blood tests assess key markers linked to skin inflammation and immune responses, including allergy-related markers, nutritional status, and other general health indicators. This analysis can help identify factors that may be contributing to persistent or unexplained skin rashes.
There is no need for a GP referral, and your results are processed promptly by our accredited partner laboratory. Arrange your private blood test for rashes at Dr Derme today.
*Blood draw fee in addition.
Procedure Time
15 minutes
Results
Within a week
Downtime
None
Preparation
None*
Numbing
Not required
Testing Method
Blood sample
What Is a Blood Test for Rashes?
A blood test for rashes helps assess internal factors that may contribute to persistent or unexplained skin rashes. Rashes can arise from allergies, immune responses, infections, nutritional deficiencies, or other health conditions. While blood testing cannot diagnose every type of rash, it can help identify potential triggers and support further investigation or treatment. Depending on the panel selected, testing may assess:
Blood Sugar & Metabolism
Glucose
HbA1c
Vitamin Levels
Vitamin B12 (Active)
Red Cell Folate
Minerals & Bone Health
Calcium
Phosphate
Magnesium
Uric Acid
Kidney Function
Urea
Creatinine
eGFR
Liver Function
ALT
AST
Gamma GT (GGT)
Bilirubin
Alkaline Phosphatase
Total Protein
Albumin
Globulin
Blood Health & Inflammation
Full Blood Count (FBC)
ESR (inflammation marker)
Thyroid Function
TSH
Free T4
Electrolytes
Sodium
Potassium
Chloride
Bicarbonate
Cholesterol & Lipids
Cholesterol (HDL, LDL, Non-HDL)
Triglycerides
Autoimmune Markers
Anti-Nuclear Antibodies (ANA – titre & pattern)
Who Should Consider a Blood Test for Rashes?
You may wish to consider a blood test for rashes if you are experiencing ongoing or unexplained skin symptoms, particularly if they are persistent, recurring, or difficult to manage. Testing may be helpful for individuals experiencing:
Persistent Redness or Inflammation
Itchy, Irritated or Sensitive Skin
Raised Patches or Hives
Dry, Flaky or Scaly Skin
Sudden Skin Flares
Understanding Your Blood Test Results
Your report will outline the markers tested, your results, and the relevant reference ranges. Results should always be considered alongside your symptoms and medical history. For personalised guidance, our doctors can review your results with you during a pre-booked consultation and advise on the most appropriate next steps tailored to you.
Why Choose Private Blood Testing?
Fast Access
Avoid long waiting times and book your test at a time that suits you.
No GP Referral Required
You can arrange testing directly with our clinic.
Comprehensive Analysis
Our tests are processed by accredited UK laboratories using clinically validated methods.
Clear, Detailed Reports
You will receive a structured laboratory report outlining your results in a clear and professional format.
Doctor-Led Support
If desired, you can book a chargeable consultation to review your results and discuss next steps.
Convenient
Appointments are discreet, efficient, and designed around your schedule.
What To Expect During Your Blood Test?
The process for blood testing is simple and straightforward. Schedule your test at a convenient time to suit you. A trained clinician will take a small blood sample, which is sent to a specialist UK laboratory for detailed allergy analysis. Results are typically available within a few days. You will then receive a detailed laboratory report outlining any identified sensitivities. You can also book a consultation to review your results* with one of our doctors if desired.
Three simple steps to start your journey
Contact us
Make a no obligation enquiry on our website. You can attach photos for our doctors to asses so we recommend the best treatment options.
You can also WhatsApp us or call us directly on 0800 009 6109. We are here to help you every step of the way.
Your Consultation
Visit your Dr.Derme clinic and meet your specialist for a consultation. During the visit, we will:
- Complete assessment
- Explain your best treatment options
- Discuss the treatment or procedure
- Answer all your questions
Your Treatment
Undergo your blood testing at one of Birmingham's leading aesthetic clinics. Following the treatment, we provide will all the aftercare advice to get the best results. We are here for you with any follow-up queries:
How Is Blood Testing Priced?
A £30 blood draw fee is required at the time of booking.
Test costs vary depending on the panel chosen, and our team will guide you on pricing before proceeding.
How Accurate Are Private Blood Tests?
Our blood tests are processed by accredited UK laboratories using validated diagnostic methods. Accuracy depends on correct clinical interpretation alongside your symptoms and medical history.
Do I Need A GP Referral For Blood Testing?
No, you can book private blood testing directly with our clinic without a GP referral.
Do I Need To Prepare Before My Blood Test?
Some tests may require fasting or specific timing (for example, morning hormone tests). We will provide clear instructions before your appointment if preparation is needed.
How Long Do Results Take?
Turnaround times vary depending on the test panel. Most results are available within a few working days. Our team will advise you at the time of booking.
Will Someone Help Explain My Results?
Yes. You will receive a detailed laboratory report, and you can book a follow-up consultation with our doctors* if you would like clinical guidance and personalised advice.
*The review with our doctors is a chargeable Dermatology consultation and not included in the cost of the testing.
What Types Of Rashes Can A Blood Test Help Investigate?
Blood testing cannot diagnose every type of rash, but it can help investigate underlying factors linked to several skin conditions.
Testing may support assessment of rashes associated with:
Allergic reactions (including food or environmental allergies)
Urticaria (hives)
Eczema or atopic dermatitis
Autoimmune-related skin inflammation
Drug-related skin reactions
Rashes linked to infections or immune responses
Blood testing may also help identify contributing factors such as inflammation, immune activity, or nutritional deficiencies that could affect skin health.