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HelpTest Code RAMBO Ammonium, Random, Urine
Useful For
Diagnosis of the cause of acidosis using random urine specimens
Diagnosis and treatment of kidney stones
Method Name
Enzymatic
Reporting Name
Ammonium, Random, USpecimen Type
UrineSpecimen Required
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Container/Tube: Plastic tube
Specimen Volume: 4 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 14 days | |
| Frozen | 14 days | ||
| Ambient | 72 hours |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
Random: 3-65 mmol/L
No reference values established for <18 years and >77 years of age.
Interpretation
If a patient has acidosis and the amount of ammonium in the urine is low, this is suggestive of a renal tubular acidosis.
If the amount of ammonium is high, this suggests that the kidneys are working normally and that there are other losses of bicarbonate in the body. Typically this implies gastrointestinal losses.
Day(s) Performed
Monday through Sunday
Report Available
Same day to 2 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82140
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| RAMBO | Ammonium, Random, U | 1842-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| RAMBO | Ammonium, Random, U | 1842-4 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.