Phosphorus, 24 hr Urine
This test measures how much phosphorus your body is excreting over 24 hours, reflecting your dietary intake and kidney handling of this essential mineral. It helps assess phosphorus balance, kidney function, and metabolic status when abnormalities are suspected.
Not especially athlete-specific. While phosphorus is critical for ATP production and muscle energy metabolism, 24-hour urine phosphorus is rarely used to optimize athletic performance or training. It's primarily a clinical tool for diagnosing kidney disease or severe mineral imbalances—concerns that would warrant medical attention before intense training.
Turnaround Time
1 day (up to 2 days)
Method
Colorimetric
Order online
Choose your lab and check out. We send your lab requisition automatically — no doctor visit needed.
Get your sample collected
Visit a lab service center near you for a quick blood draw (or book at-home phlebotomy where available).
See your results
Your results land in your Insider portal, ready to review and act on — that easy.
Your price
$5.00$30
6.0× less than retail
Versus the typical direct-to-consumer retail price for this test (illustrative — consumer prices vary by provider and region).
$5.00
Peer-reviewed sources supporting the educational content on this page.
Phosphorus, 24 hr Urine
This test measures how much phosphorus your body is excreting over 24 hours, reflecting your dietary intake and kidney handling of this essential mineral. It helps assess phosphorus balance, kidney function, and metabolic status when abnormalities are suspected.
The Phosphorus, 24 hr Urine test starts at $5.00 at Labcorp. No doctor's visit and no insurance needed; we do not bill insurance. Fitomics Insider members pay from $3.50.
Results for the Phosphorus, 24 hr Urine test are typically ready about 1 day after your draw, and up to 2 days for some samples. Your results land in your Insider portal.
No. When you order the Phosphorus, 24 hr Urine test from Fitomics Research Labs, a licensed physician in our 50-state network reviews and signs your requisition after checkout, and it lands in your portal and inbox. Then visit any Labcorp, Quest, or BioReference patient service center for your draw; results post to your Insider portal.
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