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HelpOrder Code KSQNU Keratan Sulfate Quantitative, Urine
Useful For
Monitoring the pharmacodynamic effects of enzyme replacement therapy for Morquio A (MPS IVA)
Method Name
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reporting Name
Keratan Sulfate Quantitative, USpecimen Type
UrineNecessary Information
Patient’s age is required.
Specimen Required
Supplies: Plastic, Urine Tubes, 10 mL (T068)
Specimen Volume: 1 mL
Collection Instructions:
1. Collect a random urine collection (early morning preferred).
2. Immediately freeze specimen.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Frozen | 365 days |
Reject Due To
|
Hemolysis |
NA |
|
Lipemia |
NA |
|
Icterus |
NA |
|
Other |
NA |
Reference Values
0-12 months: ≤2.50 mg/mmol creatinine
13-24 months: ≤2.00 mg/mmol creatinine
25 months-4 years: ≤1.50 mg/mmol creatinine
5-10 years: ≤1.00 mg/mmol creatinine
11-18 years: ≤0.80 mg/mmol creatinine
>18 years: ≤ 0.50 mg/mmol creatinine
Day(s) and Time(s) Performed
Varies
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. This test has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
83864
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| KSQNU | Keratan Sulfate Quantitative, U | 92806-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 64712 | Keratan Sulfate Quantitative, U | 92806-9 |
Forms
Biochemical Genetics Patient Information (T602) in Special Instructions