Creatinine
Private Creatinine blood test in London for £46, measuring one kidney-function marker with results in around 1 business day.
Turnaround time
1 business day
Biomarkers count
1
Book your test
Choose Service Type
Professional phlebotomist comes to you
+ £{{ home_visit_fee }}
Visit our clinic for your test
{{ clinic_visit_fee > 0 ? '+ £' + clinic_visit_fee : 'Free' }}
Home Visit Details
Home visits require at least 24 hours notice.
Select a clinic: Sorting by distance…
{{ clinic.full_address }}
{{ selectedClinic.full_address }}
Select a date
Select an hour
Available time slots: {{ timeSlots.length}}
Overview of the Creatinine
The Creatinine blood test measures creatinine, a waste product generated mainly through normal metabolism of creatine within skeletal muscle.
The test contains 1 biomarker: Creatinine.
Creatinine enters the bloodstream continuously and is removed predominantly through filtration by the kidneys.
When kidney filtration declines, serum creatinine commonly rises because the kidneys are clearing it less efficiently.
Creatinine is therefore one of the most widely used markers of kidney function.
However, it is not a direct measurement of filtration.
The concentration is also influenced by muscle mass, age, diet, hydration, supplements and selected medicines.
Estimated glomerular filtration rate, or eGFR, is commonly calculated using serum creatinine and provides a more interpretable estimate of filtration than creatinine alone.
One abnormal result should therefore be considered alongside previous measurements, eGFR, urine findings and the wider clinical picture.
What Does the Creatinine Test Check?
This test measures 1 biomarker.
Creatinine
Measures a waste product generated predominantly through muscle metabolism and cleared by the kidneys. Increased blood concentrations can occur when kidney filtration declines.
Who May Benefit From the Creatinine Test?
Creatinine testing may be useful whenever kidney filtration requires assessment or monitoring.
People with known kidney disease - Serial Creatinine measurements can help monitor changes in renal function.
People with diabetes - Diabetes is a major risk factor for chronic kidney disease.
People with high blood pressure - Hypertension can damage the kidneys over time.
People taking medicines that can affect kidney function - Creatinine may form part of medication-safety monitoring.
People with dehydration or significant acute illness - Reduced circulating volume can temporarily increase Creatinine.
People with a previous raised Creatinine result - Repeat testing can determine whether the change persists.
People undergoing routine kidney assessment - Creatinine is commonly interpreted alongside eGFR, Urea and Electrolytes.
People requiring kidney-function assessment before selected treatments or investigations - Renal filtration can influence medicine dosing and procedural decisions.
How to Prepare
Do not deliberately overhydrate before testing in an attempt to lower Creatinine.
Kidney function is generally best assessed using Creatinine trends together with eGFR and complementary urine markers.
Symptoms and Reasons to Consider the Creatinine Test
Early kidney impairment frequently causes no symptoms. Creatinine testing may therefore be useful because biochemical changes can develop before a person feels unwell.
Reduced urine output - A substantial decline in urine production can occur during significant acute kidney dysfunction.
Swelling of the ankles, legs or around the eyes - Fluid retention can occur with some forms of kidney disease.
Persistent unexplained fatigue - Significant kidney dysfunction can contribute to tiredness, although fatigue has many other causes.
Nausea or reduced appetite with known kidney problems - More advanced renal dysfunction can produce systemic symptoms.
Foamy urine or known protein in the urine - Protein loss can indicate kidney damage and should be interpreted with renal markers.
Blood detected in the urine - Haematuria may warrant investigation of the kidneys or urinary tract.
High blood pressure - Hypertension can both cause and result from kidney disease.
Diabetes with a need for routine renal monitoring - Kidney damage can develop before symptoms appear.
A previously reduced eGFR or raised Creatinine - Repeat testing helps determine whether an abnormality is persistent or changing.
Kidney disease can remain asymptomatic until it is relatively advanced, so symptoms should not be required before kidney-function testing is considered.
Markedly reduced urine output, severe swelling, confusion, breathlessness or acute illness with suspected kidney dysfunction requires prompt medical assessment.
How to Book Your Creatinine Test
Booking your Creatinine blood test with London Blood Tests is straightforward.
Choose the Creatinine
Select the individual Creatinine blood test.
Select your sample collection option
Choose an in-clinic blood draw or professional home or hotel phlebotomy.
Attend your appointment
A trained healthcare professional collects the required venous blood sample.
Laboratory analysis
Your serum is analysed for Creatinine concentration.
Receive your results securely
Your authorised result is delivered securely for interpretation alongside eGFR where available.
When Will I Receive My Results?
Results are expected approximately 1 business day after the blood sample reaches the laboratory.
Results are sent securely by email once specialist laboratory analysis and authorisation are complete. Turnaround generally begins when the laboratory receives your blood sample rather than necessarily from the time it is collected.
Understanding Your Results
A Creatinine result within the laboratory reference interval may be consistent with adequate renal filtration, but it does not completely exclude kidney disease.
A raised result can occur when kidney filtration declines.
Possible causes range from dehydration and medicine effects to acute kidney injury or chronic kidney disease.
Creatinine can also rise following significant muscle injury or creatine supplementation.
A low Creatinine concentration is commonly associated with lower muscle mass and should not automatically be interpreted as unusually good kidney function.
Changes from a person's own baseline can be particularly important.
Why Book With London Blood Tests?
Private Creatinine testing in London - Access an individual kidney-function marker privately.
Widely used renal biomarker - Creatinine is central to routine kidney assessment.
Useful for monitoring trends - Repeat measurements can identify meaningful changes in filtration.
Relevant to medication safety - Kidney function influences the use and dosing of many medicines.
Fast results - Results are expected approximately 1 business day after laboratory receipt.
Trusted UK laboratories - Samples are processed through established professional laboratory services.
Clinic and home collection options - Professional phlebotomy can be arranged.
Clear pricing - The Creatinine test costs £46.
Private Creatinine Blood Test in London
London Blood Tests provides private Creatinine blood testing in London for people requiring targeted assessment of kidney filtration.
The test costs £46 and measures one biomarker: Creatinine.
Results are expected approximately 1 business day after laboratory receipt.
Creatinine is most informative when interpreted alongside eGFR and, where relevant, urine albumin and other kidney markers.