Albumin Random Urine With Creatinine (uACR) Biomarker Testing
It checks urine albumin relative to creatinine to screen for early kidney damage, with convenient ordering and clear next steps through Vitals Vault and Quest.
With Vitals Vault, you have access to a comprehensive range of biomarker tests.
This test looks for a small but meaningful signal of kidney stress: albumin (a blood protein) showing up in your urine.
Because urine concentration changes throughout the day, the lab pairs albumin with urine creatinine and reports a ratio (often called the urine albumin-to-creatinine ratio, or uACR). That ratio helps your result stay interpretable even if your urine is more dilute or more concentrated.
A single abnormal result does not diagnose chronic kidney disease by itself. It is most useful as a screening and monitoring tool that you review in context with your clinician and other kidney markers.
Do I need a Albumin Random Urine With Creatinine test?
You may want this test if you are screening for early kidney damage, especially if you have diabetes, high blood pressure, a family history of kidney disease, or you have been told your estimated glomerular filtration rate (eGFR) is trending down.
It can also be helpful if you have risk factors that can affect the kidneys over time, such as obesity, smoking, cardiovascular disease, or long-term use of certain medications (for example, frequent NSAID use). Many people feel completely normal even when early kidney injury is present, so this test is often about prevention rather than explaining a specific symptom.
If you already have known kidney disease, your clinician may use uACR to stage risk and to monitor whether treatment and lifestyle changes are reducing albumin leakage.
Testing supports clinician-directed care and follow-up planning. It is not meant to be used as a stand-alone diagnosis or to replace medical evaluation when you have concerning symptoms such as swelling, foamy urine, or shortness of breath.
This is a CLIA laboratory test that measures urine albumin and urine creatinine and reports a calculated ratio; results should be interpreted with your medical history and repeat testing when appropriate.
Lab testing
Order labs to measure Albumin-to-Creatinine Ratio (Urine)
from $33.99 at Quest Diagnostics
About 1 week
Schedule online — results typically within a week
Clear next steps
Guidance included, with follow-up care available
HSA / FSA
Eligible for pre-tax health spending accounts
Get this test with Vitals Vault
Vitals Vault lets you order Albumin Random Urine With Creatinine testing so you can check kidney risk signals on your schedule and bring a clear data point to your next visit.
After your results post, PocketMD can help you understand what the ratio means, what follow-up labs are commonly paired with it (such as eGFR and electrolytes), and when a repeat test is reasonable if your result may have been affected by exercise, illness, or a urinary infection.
If your result is elevated, you can use the same workflow to recheck after a clinician-guided plan, which is often how uACR becomes most useful: tracking trends rather than reacting to a single number.
- Order online and complete testing through a national lab network
- PocketMD guidance to prepare questions and next steps for your clinician
- Easy retesting to confirm a finding and monitor change over time
Key benefits of Albumin Random Urine With Creatinine testing
- Screens for early kidney damage before symptoms are obvious.
- Adjusts for urine concentration by using a creatinine-based ratio (uACR).
- Helps assess kidney risk in diabetes and high blood pressure.
- Supports staging and monitoring of chronic kidney disease risk over time.
- Can guide follow-up decisions, such as repeating the test or adding eGFR and blood pressure review.
- Helps distinguish a one-time spike from a persistent pattern when repeated under stable conditions.
- Creates a simple baseline you can trend alongside other kidney and cardiometabolic labs.
What is Albumin Random Urine With Creatinine?
Albumin is a protein that normally stays in your bloodstream. Healthy kidneys filter waste while keeping proteins like albumin from leaking into urine.
When the kidney’s filtering units (glomeruli) are stressed or damaged, small amounts of albumin can pass into urine. This is called albuminuria. Because a random urine sample can be dilute or concentrated depending on hydration, the lab also measures urine creatinine and reports an albumin-to-creatinine ratio (uACR). That ratio is a practical way to estimate how much albumin you are losing per day without requiring a 24-hour urine collection.
Why creatinine is included
Creatinine is a breakdown product from muscle metabolism that is released at a fairly steady rate. In urine testing, it acts like a “normalizer” so the albumin result is not over-interpreted just because you drank a lot of water (dilute urine) or were dehydrated (concentrated urine).
How uACR is used clinically
uACR is commonly used to screen for diabetic kidney disease and hypertensive kidney damage, and to help estimate future risk of kidney function decline and cardiovascular events. Many guidelines rely on persistent elevation (usually confirmed on repeat testing) rather than a single abnormal value.
What do my Albumin Random Urine With Creatinine results mean?
Low albumin or low uACR
A low uACR is generally reassuring and usually means there is little to no albumin leaking into your urine. In most cases, “lower is better” for this marker. If your urine creatinine is extremely low because the sample is very dilute, your clinician may still recommend repeating the test to confirm the ratio is reliable.
Optimal (in-range) uACR
An in-range uACR suggests your kidneys are not showing evidence of abnormal albumin leakage at the time of testing. If you have diabetes or high blood pressure, this result can serve as a baseline to trend over time. Your clinician may still pair it with blood tests like creatinine/eGFR because uACR and eGFR answer different questions about kidney health.
High uACR (albuminuria)
A high uACR means more albumin is present in your urine than expected, which can be a sign of kidney stress or damage. One elevated result is often followed by repeat testing (commonly within weeks to a few months) to confirm persistence, because temporary increases can happen. If elevation is confirmed, common next steps include checking eGFR, blood pressure control, diabetes control (if applicable), and evaluating for other causes such as urinary tract issues.
Factors that influence uACR
Hard exercise in the prior 24 hours, fever, acute illness, dehydration, and urinary tract infections can raise urine albumin temporarily. Menstruation, recent ejaculation, or visible blood in urine can also affect results depending on timing and sample quality. Pregnancy and uncontrolled blood pressure or blood sugar can increase albumin leakage. Because creatinine depends partly on muscle mass, very low or very high muscle mass can subtly affect the ratio’s interpretation, which is another reason trends and clinical context matter.
What’s included
- Albumin/Creatinine Ratio, Random Urine
- Albumin, Urine
- Creatinine, Random Urine
Similar tests to consider
Frequently Asked Questions
What is the urine albumin-to-creatinine ratio (uACR)?
uACR is a calculated ratio that compares urine albumin to urine creatinine in the same random sample. It helps estimate albumin loss while correcting for how dilute or concentrated your urine is.
Do I need to fast for an Albumin Random Urine With Creatinine test?
Fasting is not usually required for uACR. If you are pairing it with other blood tests (like glucose or lipids), those tests may have fasting instructions, so follow the collection guidance for your full order.
Is a random urine uACR as good as a 24-hour urine collection?
For screening and routine monitoring, a random urine uACR is widely used because it is convenient and correlates well with 24-hour albumin excretion in many situations. A 24-hour collection may be used in specific cases when your clinician needs a more direct measurement or when results are inconsistent.
What can cause a false high uACR result?
Temporary albumin increases can occur after vigorous exercise, during fever or acute illness, with dehydration, or with a urinary tract infection. Contamination with menstrual blood or timing around sexual activity can also affect urine testing. If your result is unexpectedly high, repeating the test under stable conditions is common.
How often should uACR be repeated?
If you have diabetes or high blood pressure, many clinicians check uACR at least yearly, and more often if results are abnormal or treatment is being adjusted. If you have a single elevated result, repeat testing is often done to confirm persistence before making long-term conclusions.
What other tests are commonly checked with uACR for kidney health?
Common companion tests include blood creatinine with eGFR, electrolytes, and sometimes a urinalysis (to look for blood, infection, or other abnormalities). Your clinician may also focus on blood pressure, A1c (for diabetes), and lipid levels because kidney and cardiovascular risks overlap.
Does a high uACR mean I have chronic kidney disease?
Not by itself. Chronic kidney disease is typically diagnosed based on persistent abnormalities over time, such as sustained albuminuria and/or reduced eGFR for at least three months, along with clinical context. A high uACR is a reason to follow up, not a diagnosis on its own.