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Catalog ID CTX Beta-CrossLaps, Serum

Important Note

CPOE TEST NAME:  Ref Misc Referral Lab Test

Test Name REF:  B-CTx 

Reporting Name

Beta-CrossLaps (B-CTx), S

Useful For

Monitoring antiresorptive therapies (eg, bisphosphonates and hormone replacement therapy) in postmenopausal women treated for osteoporosis and individuals diagnosed with osteopenia

 

An adjunct in the diagnosis of medical conditions associated with increased bone turnover

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum
AUMC Laboratory Catalog Note:

Collect 2 mL blood in Red top tube. Collect before 10 AM.


Specimen Required


Patient Preparation:

1. For 12 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

2. Patient should be fasting.

Supplies: Aliquot Tube, 5 mL (T465)

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial, 5 mL

Specimen Volume: 1 mL

Collection Instructions:

1. Collect specimen prior to 10 a.m.

2. Centrifuge and aliquot serum into plastic vial.


Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 90 days
  Refrigerated  72 hours

Reference Values

Males

<18 years: not established

18-30 years: 120-946 pg/mL

31-50 years: 93-630 pg/mL

51-70 years: 35-836 pg/mL

>70 years: not established

Females

<18 years: not established

Premenopausal: 25-573 pg/mL

Postmenopausal: 104-1,008 pg/mL

Day(s) and Time(s) Performed

Monday through Friday; 5 a.m.-12 a.m., Saturday; 6 a.m.-6 p.m.

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

82523

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CTX Beta-CrossLaps (B-CTx), S 41171-0

 

Result ID Test Result Name Result LOINC Value
CTX Beta-CrossLaps (B-CTx), S 41171-0

Reject Due To

Gross hemolysis Reject
Gross lipemia OK

Method Name

Electrochemiluminescence Immunoassay (ECLIA)