Sign in →

Test Code 5NTDSO 5'-Nucleotidase, Serum

Additional Codes

Mayo Test Code: 5NTD


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and aliquot serum into plastic vial.


Useful For

Aiding diagnosis and monitoring of hepatobiliary disease and bile duct obstructions

 

Ruling out bone pathology as the source of elevated serum alkaline phosphatase

Method Name

Coupled Enzyme Kinetic Assay

Reporting Name

5'-Nucleotidase, S

Specimen Type

Serum

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Frozen  90 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus OK

Reference Values

<4.6 U/L

 

For International System of Units (SI) conversion for Reference Values, see www.mayocliniclabs.com/order-tests/si-unit-conversion.html.

Cautions

Alkaline phosphatase (ALP) is known to cross-react with 5'-nucleotidase (5'NT) measurements. Placental ALP of 100 U/L gives a 5'NT result of 0.27 U/L. Accordingly, specimens with elevations of any ALP isoenzyme significantly above normal circulating activity must be interpreted cautiously.

 

5'-nucleotidase is neither specific nor sensitive enough to be used as a cancer screen.

 

Do not interpret serum 5' NT activity as absolute evidence of the presence or the absence of malignant disease. Use serum 5' NT in conjunction with information from the clinical evaluation of the patient and other diagnostic procedures.

 

Values obtained with different assay methods or kits may be different and cannot be used interchangeably.

Day(s) Performed

Monday through Saturday

Report Available

1 to 3 days

Specimen Retention Time

2 weeks

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

83915

LOINC Code Information

Test ID Test Order Name Order LOINC Value
5NTD 5'-Nucleotidase, S 1690-7

 

Result ID Test Result Name Result LOINC Value
5NTD 5'-Nucleotidase, S 1690-7