|
Alternate Names
|
Carboxyterminal crosslinked telopeptide of type 1 collagen, CTX, beta crosslaps, C Telopeptide. |
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Ordering Information
|
C-Telopeptide is a marker of bone resorption
A request for Bone Markers will result in the assay of both C-Telopeptide and P1NP. |
|
Laboratory
|
Biochemistry |
|
Specimen
|
Blood |
|
Container
|
Serum tube (gold cap OR red cap w. yellow insert) |
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Additional Collection Instructions
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A fasting sample is preferred but not obligatory.
For long term monitoring, it is recommended that samples are collected at the same time of the day.
Other serum tests can be collected into the same tube. |
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Minimum Adult Volume
|
5mL |
|
Minimum Paediatric Volume
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1mL |
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Notes
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Either the test must be assayed or the serum frozen within 8 hours of collection. |
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Frequency
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Three times per week |
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Reference Interval
|
| Reference Interval (ng/L) |
| Age |
Male |
Female |
| 20 - 25 years |
400 - 900 |
150 - 800 |
| 25 - 50 years |
100 - 600 |
150 - 800 |
| 50 - 70 years |
100 - 600 |
50 - 800 |
| > 70 years |
100 - 750 |
100 - 1000 |
Source: Australian Consensus Reference Interval |
