Bedtime Cortisol Test

What is the recommended timing of collecting my sample?

Because this is a Bedtime Cortisol test, the sample must be taken 30 minutes before going to sleep. This should be between 8:00 PM and 3:30AM.

Is there a video showing how to collect a saliva test?

All sample collection videos are linked in this FAQ, and you'll find the same videos within the lab registration process.

What if I cannot produce enough saliva for my samples?

Some tips for increasing saliva production: -Swish water around in mouth 5-minutes before collecting the sample. -Also, smell food or cut a lemon in half and sniff to produce more saliva.

What should I do prior to my saliva sample collection?

Prior to your saliva sample collection make sure you have all of your supplies and remain relaxed. Sometimes saliva collection is not as quick as you would think and it's important to have patience.

How long are my saliva samples viable for?

Saliva samples are viable for up to 30 days. *We highly recommend sending your sample right away if possible to make sure the sample reaches the lab with plenty of time. If you cannot send right away, we recommend freezing the saliva sample and

Is there anything I should avoid before collecting the saliva samples?

Do not eat, drink (except water), or brush teeth at least 2 hours prior to collections.

How do I mail my sample back (US)?

Place all contents & forms back in the plastic test kit box and then place in the return packaging provided (see instructions for specific packaging). Attach the pre-paid UPS shipping label and drop off at your nearest UPS location

How do I mail my sample back (International)?

Please see our International Shipping FAQ for instructions specific to your lab. Before returning your sample, please register your lab by scanning the QR code and answering all questions before it's mailed back with the sample. The ZRT Kit ID is fou