Want to ensure your kidneys are filtering waste effectively, monitoring medication effects, or maintaining optimal kidney function for long-term health?
Monitor your kidney health and function with our Creatinine Blood Test. This essential marker provides crucial insights into how well your kidneys filter waste from your blood, helping detect kidney disease early and guide treatment decisions.
You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.
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How does it work?
Bloody Good is a single portal for ordering, tracking, and reviewing on-demand health testing. Get started with three simple steps:
1
Book your test
Choose the testing that suits your goals. After ordering, you will receive your referral by email.
2
Collect your samples
Have your sample collected at one of our 4000+ partner collection centres.
3
View your results
View your lab results and receive a personalised review from the secure Bloody Good platform.
Think of creatinine as your kidney’s report card—it shows how well these hardworking organs are clearing waste from your blood. Your muscles release a small, steady trickle of creatinine every time they recycle energy. Although this production stays fairly constant day-to-day for each person, it does differ from one individual to another based on muscle mass, age, and sex. In healthy kidneys, creatinine is swiftly filtered out of the bloodstream and sent into the urine, so the amount left in your blood becomes a convenient snapshot of kidney function.
When blood creatinine starts to inch upward, it’s a quiet alarm that your kidneys may be falling behind. That’s important because kidney problems usually develop silently—people often feel fine while damage is happening in the background. Persistently elevated creatinine can point to chronic kidney disease, diabetes- or blood-pressure–related kidney damage, or side effects from certain medications. Because the test is quick, inexpensive, and largely unaffected by short-term changes in diet or exercise, it’s a staple of routine blood work that helps catch kidney trouble early, when treatment is most effective.
Reviewed by Dr. Vu Tran Bloody Good’s Chief Medical Officer
You may benefit from the Creatinine Blood Test
Essential for people with diabetes, high blood pressure, or family history of kidney disease. Important for monitoring medications that can affect kidney function. Valuable for anyone with cardiovascular disease, older adults, and those with risk factors for kidney problems.
High blood pressure readings
Flank pain or back pain related to kidneys
Swelling around eyes or face
Comprehensive metabolic panel
High-protein diet monitoring
How to prepare
No fasting required. Can be taken at any time of day. Inform your healthcare provider about medications, especially those that might affect kidney function. Avoid extremely high protein meals immediately before testing. Stay normally hydrated - don't over-hydrate or become dehydrated before testing.
Understanding results
Normal ranges vary by gender, age, and muscle mass. Men: 70-110 μmol/L (0.8-1.3 mg/dL); Women: 50-90 μmol/L (0.6-1.0 mg/dL). Elevated levels may indicate reduced kidney function, kidney disease, dehydration, or certain medications. Even small increases within the normal range can be significant for kidney function assessment when calculating eGFR.
After the test
Discuss elevated results with your healthcare provider immediately as this may indicate kidney problems requiring further evaluation. Additional testing may include eGFR calculation, urine tests, kidney ultrasound, or referral to a nephrologist. Treatment depends on the underlying cause and may include blood pressure management, diabetes control, medication adjustments, or specific kidney disease treatments.
Frequently Asked Questions
Elevated creatinine typically indicates that your kidneys aren't filtering waste as effectively as they should. This could suggest kidney disease, dehydration, certain medications, or other conditions affecting kidney function.
Yes, certain medications including some antibiotics, blood pressure medications, pain relievers, and diabetes drugs can affect kidney function and creatinine levels. Always inform your doctor about all medications you're taking.
eGFR provides a more accurate assessment of kidney function by adjusting creatinine levels for age, gender, race, and body size, giving a better picture of how well your kidneys are working.
For people with kidney disease or risk factors, creatinine may be checked every 3-6 months or more frequently. For healthy individuals, annual checking as part of routine screening is often sufficient.
Extremely high protein intake or creatine supplements can temporarily raise creatinine, but dietary protein has minimal effect on the test. Normal dietary variations don't significantly impact results.
Both measure kidney function, but creatinine is more specific to kidney function while BUN can be affected by hydration, protein intake, and liver function. Creatinine is generally considered more reliable for kidney assessment.
You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.
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Frequently Asked Questions
Find answers to common questions about our products and services.
Most collection centres accept walk-ins. Some may require a booking - check details when you click on your chosen location.
If your test needs fasting, we’ll include that in your instructions after you order. Fasting usually means no food for 8–12 hours, but water is fine.
Just your pathology referral form (we email it to you)
Of course. Just maybe don’t bring the friend who faints at the sight of blood.
They’re the highly trained professionals who take your blood sample - with a steady hand and a sharp needle. They love blood, but don’t worry… they’re not vampires. Just legends who make blood tests quick, clean, and (almost) painless.
Some of our tests include Urine, Stool, Saliva and more. Each test will have a clear description on what sample you will need to give and instructions on how.
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