Test Entry - Detail

CTx

General

Clinical Use:

CTx is a marker of bone resorption achieved by the quantitative determination of degradation products of type 1 collagen in human serum and plasma.

Availability:

Samples are tested Monday-Friday.

Aliases/Synonyms:

Beta-Crosslaps, Beta-CTx, Beta-Isomerized C-Terminal Telopeptide, C-Terminal Telopeptide,

Code:

CTX

Handling Instructions (to laboratory):

Send sample chilled.

Hyperlink:

Reference Interval:

CTx Reference Interval (ng/L)

Males
Birth to <5 years       600 - 1700
>=5 to <9 years	      700 - 1900
>=9 to <11 years        900 - 2400
>=11 to <13 years       1000 - 3000
>=13 to <15 years       1000 - 3300
>=15 to <16 years       1000 - 3000
>=16 to <17 years       750 - 2700
>=17 to	<19 years      500 - 2300
>=19 to	<20 years      400 - 2000
>=20 to	<25 years      250 - 1000
>=25 to	<70 years      100 - 600
>=70 to	<121 years     100 - 750

Females
Birth to <5 years      600 - 1700
>=5 to <9 years	     700 - 1900
>=9 to <14 years       900 - 2600
>=14 to	<16 years     400 - 2000
>=16 to	<17 years     400 - 1500
>=17 to	<20 years     400 - 1200
>=20 to	<23 years     300 - 1200
>=23 to	<26 years     200 - 1000
>=26 to	<50 years     150 - 800*
>=50 to	<121 years    50 - 800

*Higher levels may be seen in women <40 years.

High dose Biotin (>5mg/d) may falsely decrease CTx.

Collection Requirements

Container:

EDTA with gel-PPT (PEARL),

Sample Type:

See container

Minimum Collection Volume:

1mL

Collection Instructions:

Patient must be fasting.

Processing Requirements

Alternate Containers:

Processing Instructions:

Centrifuge sample before transporting to testing laboratory.

Minimum Assay Volume:

200uL

Stability:

24 hours ambient; 8 days chilled; 3 months frozen

Transport Instructions (to testing laboratory):

Send sample chilled.

Testing Locations

Performed at:

Section	Department	Site	Contact Phone
Special Chemistry	Biochemistry	Fiona Stanley Hospital	6152 2830

Last Updated : 15-10-2024 11:14