Fluid Retention & Swollen Legs Blood Test | Nuvivo Health – Nuvivo Health – Private Blood Tests

25 Biomarkers | Blood & Random Urine Sample | CE-marked | UKAS-accredited | Doctor-reviewed results with personalised interpretation.

A combined blood and urine test checking markers linked to swollen legs, fluid retention, kidney function, liver function, inflammation and urine health. Designed for people investigating puffiness, swelling or fluid-related symptoms, this profile gives clear, clinically reviewed insight into kidney, liver, inflammation and urine markers so you can better understand your results and know what to do next.

Results are typically available within 3–7 working days from when your sample reaches the laboratory, excluding weekends and bank holidays.

£99.00

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Choose your sample collection method: Book a venous draw at our Livingston clinic Book a venous draw at home with a nurse +£63 Self-arrange a professional sample collection Partner clinic visit + £35.00 Finger Prick

Urine Casts
Urine Crystals
Organisms

Urine Blood
Urine RBCs
Urine WBC
Urine Epithelial Cells

Urine Protein
Urine Glucose
Ketones
Urine Bilirubin
Urine Urobilinogen
Urine pH

C-reactive Protein, CRP

Alanine Transferase
Aspartate Transferase
Alkaline Phosphatase
Gamma GT
Bilirubin
Albumin
Globulin
Total Protein

Creatinine
Estimated GFR
Urea

Fasting required 8–12 h before the test (water only) recommended for glucose, cholesterol/triglyceride accuracy
Sample timing: between 7:00 AM – 10:00 AM
Stay hydrated; avoid strenuous exercise, heavy meals, and supplements (iron, B12, multivitamins, biotin) for 48 hours prior
Continue prescribed medications unless otherwise directed

Frequently asked questions

It is for adults experiencing puffiness or swelling, most often in the ankles, feet or lower legs. It examines the systems that regulate fluid balance in the body, including kidney function, liver function, protein levels and electrolytes.

Fasting is not usually required for this panel. Please stay normally hydrated and drink water as usual, as dehydration can alter kidney and electrolyte readings.

Yes, if the swelling came on suddenly, affects only one leg, or is accompanied by chest pain, breathlessness, or a hot and painful calf. Those symptoms need same-day medical assessment rather than a routine blood test. Please contact NHS 111, your GP, or attend A&E.

It can. Prolonged standing or sitting, heat, pregnancy, some medications and venous circulation problems can all cause swelling without altering blood chemistry. Normal results help rule out kidney, liver and protein-related causes so that other explanations can be examined.

This panel focuses on kidney function, liver function and fluid-regulating markers. If a cardiac cause is suspected, our Heart Health Blood Test is a better fit and your report will say so if the findings point that way.