This is an important test to help diagnose and monitor changes in bone resorption.

Venous blood
1 tests included
4 days turnaround



About Crosslaps

What is the crosslaps test?

The crosslaps test measures the C-terminal telopeptide (CTX), a biomarker closely associated with bone resorption. Bone resorption is a part of the normal bone remodelling process which is constantly active during our lifetime. Abnormal bone resorption can cause a number of diseases such as osteoporosis.  

Why take the test?

This test is used to monitor bone resorption using the CTX biomarker. It is typically used to monitor changes in bone resorption, particularly in individuals taking antiresorptive therapies.


What's tested

Bone Health

How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.