The urinary system produces urine as a way of removing unwanted waste from the body.
The bladder and kidneys form part of the urinary system along with the urethra and penis in men. The average adult produces around 3 litres of urine in 24 hours – but of course this depends on circumstances such as how much you drink or if you have been exercising and sweating heavily.
Urine is produced from urea which is produced when foods containing protein, such as meat, poultry, and certain vegetables, are broken down in the body.
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US Custom changes Aug 29 2025
Every US shipment, regardless of value or content, must now undergo full entry with U.S. Customs and Border Protection (CBP).
Our lab partners are working hard to reduce the impact of these new customs procedures on returning US bound test samples.
Unfortunately this change may impact your test results turnaround time
Transit times may be longer due to increased customs processing.
Samples may be delayed or held while clearance is completed.
If you have already sent back your sample and it is directly affected by these customs delays, our team will contact you individually to advise on the next steps.
We know how vital timely testing is for you and we greatly value your understanding while these changes take effect.
We expect the situation to improve as customs processes adjust, and we will provide updates as this develops.
Please do not return samples to the laboratories that may arrive after Wednesday 27th March and up to and including Monday 2nd April.
The laboratories are closed from the 28th March – 2nd April for the Easter Holiday.
