Specimen: Urine (24-hour)
This test measures how much sodium your body excretes over 24 hours, reflecting dietary salt intake and kidney function. It helps assess hydration status, blood pressure control, and whether sodium balance is appropriate for your health goals.
Athletes lose sodium through sweat during training and competition; 24-hour urine sodium helps determine if your intake matches losses and supports proper fluid balance, muscle function, and cardiovascular stability. This is most relevant if you train in heat, do prolonged endurance events, or have concerns about electrolyte management and recovery.
Turnaround Time
3 days
Method
Ion-selective electrode (ISE); flame photometer
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
$28.00$85
3.0× less than retail
Versus the typical direct-to-consumer retail price for this test (illustrative — consumer prices vary by provider and region).
$28.00
Peer-reviewed sources supporting the educational content on this page.
Specimen: Urine (24-hour)
This test measures how much sodium your body excretes over 24 hours, reflecting dietary salt intake and kidney function. It helps assess hydration status, blood pressure control, and whether sodium balance is appropriate for your health goals.
The Sodium, 24 hr Urine test starts at $28.00 at Labcorp. No doctor's visit and no insurance needed; we do not bill insurance. Fitomics Insider members pay from $20.00.
Results for the Sodium, 24 hr Urine test are typically ready about 3 days after your draw. Your results land in your Insider portal.
No. When you order the Sodium, 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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