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Geisinger Medical Laboratories Test Catalog
COLLAGEN CROSS-LINKED N-TELOPEPTIDE (NTX), 24H U |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB2055 Geisinger Epic ID: 35218 | |
SPECIMEN COLLECTION |
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Specimen type: |
24-hour urine | |
Preferred collection container: |
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Specimen required: |
5 mL aliquot of 24-hour urine, as above; minimum 2 mL. | |
Special notes: |
Keep refrigerated during collection. Collect without preservative. Mix well. Estimate total collection volume from 24-hour urine container. Remove required aliquot. Record total volume on both aliquot tube and request slip (if applicable). Also record patient's age and sex on both aliquot tube and request slip (if applicable). | |
| SPECIMEN PROCESSING |
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Transport temperature: |
Refrigerated (preferred). | |
Specimen stability: |
Room Temperature: 72 hours. Refrigerated: 5 days. Frozen: 30 days. | |
Rejection criteria: |
Stability limits exceeded, acidified specimens. | |
TEST DETAILS |
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CPT code(s): |
82523, 82570 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Test includes: |
Collagen Cross-Linked N-Telopeptide (NTx), 24-Hour Urine | |
Methodology: |
Chemiluminescence |
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Synonyms: |
N-TelopeptidE, NTx, Quest code 36421 CCL24U
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Clinical significance: |
NTx is useful to assess bone resorption in patients with metabolic bone disease and monitor therapy to slow or halt osteoporotic bone loss. A decline of 30% or more of NTx over a six-month period suggests effective therapy. | |