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Creatinine, 24-Hour Urine

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A Creatinine Urine Test is used to determine glomerular filtration rate, which helps to measure how well the kidney functions.

  • Sample Type: Urine
  • Results: 1-7 days
  • Age: 18+

The Creatinine 24 Hour Urine test is primarily used to evaluate kidney function. Creatinine is a waste product formed by the normal breakdown of muscle tissues. Healthy kidneys efficiently remove creatinine from the bloodstream, excreting it into the urine. If kidney function is impaired, creatinine levels can build up in the bloodstream. By measuring the amount of creatinine excreted in the urine over a 24-hour period, healthcare providers can assess how well the kidneys are functioning.

An elevated level of creatinine in the 24 Hour Urine test indicates that the kidneys may be excreting an excessive amount of creatinine, which could be due to conditions like glomerulonephritis or dehydration. Conversely, decreased levels of creatinine in the urine can suggest that the kidneys are not efficiently filtering creatinine from the blood, potentially due to chronic kidney disease, kidney failure, or reduced blood flow to the kidneys.

For 24-hour urine specimen: Obtain a specimen container and instructions from the draw site. Void at 8 AM and discard the specimen. Then collect all urine including the final void at the end of the 24-hour collection period (ie, 8 AM the next morning) in the specimen container. Screw the lid on securely and return the container promptly to the draw site.

Quest test codes: 381


+$15 service fee

Price does not include the Physician Service Fee ($6) and the Lab Collection Fee ($9). These non-refundable fees cover the ordering and oversight of lab tests and follow-up services when appropriate.

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Provided by Quest Diagnostics
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  • Order Tests Online

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  • Go to the Lab for Sample Collection

    Complete your test sample collection during your scheduled appointment.
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    We will email you when your results are ready. Access your Confidential Lab Record by logging in to your account. There you can view, save and print your results.

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Lab Tests FAQs

No. At Tripment Health, we focus on providing transparent healthcare services to uninsured or under-insured individuals. We’ve negotiated prices directly with lab test facilities to make diagnostic lab panels available to individuals who would rather pay directly than go through a private or government-sponsored insurance carrier.

No. By purchasing a blood panel, you will not be able to submit any claim, bill, or other request for reimbursement to any insurer, third-party payer, or government health program. However, you can use your FSA and HSA card. 

You will receive a payment confirmation email, then an additional email confirming your appointment details (time and location of appointment, and QR code). You will need to present your QR code at the testing facility to check in.

No. One of our physicians will order the panels for you.

You must be 18 or over to be able to get tested.