Urine: (Suggested initial dilution 1:2)
Overnight or 24 h urine is recommended.
As soon as possible after collection sample should be diluted with urine stabilizing buffer (USB). Sample:USB 4:1. After the addition of USB, samples can be stored at 20-25 °C for up to 48 hours, at 2-8 °C for up to one week or at - 20 °C for >1 year.
Repeated freeze thawing of samples should be avoided.
Serum, Plasma: (Suggested initial dilution 1:5)
Centrifuge within 3 hours from time of collection and transfer the sample from the original tube for storage. Samples can be stored at 20 – 25 °C for up to 48 hours, at 2 – 8 °C for up to one week or at -20 °C for >1 year. Repeated freeze thawing of samples should be avoided.
Repeated freeze thawing of samples should be avoided.
