Pathology Handbook

Recent changes for N-Telopeptides Urine
Date	Field	Changed From	Changed To
6th March 2025	Alternative names		NTX

Alternative Names:

NTX

Laboratory:

Clinical Biochemistry

Test Code:

UNTX

Specimen Types:

Urine Second Void

Container Types:

Plain 70mL pot

Adults Volume or Mass:

10 mL

Collection & Request Instructions:

In conjunction with bone density scan, N-TELOPEPTIDE is a marker of bone metabolism.

Transport Instructions between Sites and/or Laboratories:

Room Temperature

Assay Frequency:

Fortnightly

Additional Notes:

This test is no longer available at Royal Prince Alfred Hospital

Serum Procollagen Type I N Protpetide, P1NP and Serum C-terminal Telopeptide of Type I Collagen, CTX are the preferred markers of bone turnover.

NTX Reference Range:

Female: 17 - 94 nmol/mmol creat.

Male: 21 - 83 nmol/mmol creat.

(Source: SSWPS)