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Test Code C-Telopeptide C-Telopeptide, Beta-Cross-Linked

Clinical System Name

C-Telopeptide, Beta-Cross-Linked

Synonyms

C telopeptide

Beta-CTx

?-Cross Laps

B-CTx

Beta-Cross Laps

bone resorption marker

C-Telopeptide

C-terminal collagen crosslinks

Carboxy terminal collagen crosslinks

Collagen C Telopeptide

Collagen Type I-C

Collagen Type I-C Telopeptide

CTx

Sample Requirements

Specimen: Whole Blood

Container(s): Dark Green/Sodium Heparin, Red, Gold SST, or Lavender/EDTA

Preferred Vol: 2.0 mL

Minimum Vol: 1.0 mL

 

Note: For patients receiving therapy with high biotin doses (e.g. greater than 5 mg/day), specimen should not be drawn until at least eight hours after the last biotin administration.

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Processing Instructions

Reject due to: Hemolyzed specimens.

Spin: Y

Aliquot: Y

Temp: -20 C

Storage location: Allow serum separator tube to sit for 15-20 minutes at room temperature for proper clot formation. Centrifuge and separate serum or plasma from cells within TWO hours of collection. Place sample in CPA -20 freezer, Send Outs rack.

 

Off-site collection:  Separate serum or plasma from cells within 2 hours of collection.

Stability

Specimen Type Temperature Time
Serum or plasma Room temp

4 h

  Refrigerated 8 h
  Frozen

3 m

 

Availability

STAT Performed TAT
N T, Th, and Sa 1 - 4 d

 

Performing Laboratory

ARUP Laboratories

500 Chipeta Way
Salt Lake City, UT 84108-1221
 

Phone Number: (800) 522-2787

Department

Department: Send Outs

Phone Number: (206) 987-2563

 

 

 

Reference Range

Age Female (pg/mL) Male (pg/mL)
6 months-6 years 500-1800 500-1700
7-8 years 566-1690 522-1682
10-12 years 503-2077 553-2071
13-15 years 160-1590 485-2468
16-17 years 167-933 276-1546
18-29 years 64-640 87-1200
30-39 years 60-650 70-780
40-49 years 40-465 60-700
50-69 years   87-345
70 years or greater   80-1050
Postmenopausal 104-1008  

 

Methodology

Method: Quantitative Electrochemiluminescent Immunoassay

Analytical Volume: 0.5 mL Serum or Plasma

Limitations:

CPT Codes

82523

Send Out Instructions

Reference Test Name: C-Telopeptide, Beta-Cross-Linked, Serum
Reference Test Number:

0070416

Instructions:

Send out Monday - Friday with the ARUP courier.