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HelpOrderable Name CARU Cyclic Adenosine Monophosphate (cAMP), Urinary Excretion, Serum and Urine
Specimen Required
Both serum and urine are required. Serum must be obtained at the time of the urine collection.
Specimen Type: Serum
Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.
3. Label specimen as serum.
Specimen Type: Urine
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Container/Tube: Plastic vial
Specimen Volume: 5 mL
Collection Instructions:
1. Collect a random urine specimen.
2. Label specimen as urine.
Useful For
Differential diagnosis of hypercalcemia
As an adjunct to serum parathyroid hormone measurements, especially in the diagnosis of parathyroid hormone resistance states, such as pseudohypoparathyroidism
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| ACREA | Creatinine, S | Yes, (order CRTS1) | Yes |
| CAMP | Cyclic Amp, Urinary Excretion | No | Yes |
| CRETR | Creatinine, Random, U | Yes, (order RCTUR) | Yes |
Method Name
ACREA, CRETR: Enzymatic Colorimetric Assay
CAMP: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Specimen Type
SerumUrine
Specimen Minimum Volume
Serum: 0.5 mL
Urine: 2.0 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Frozen | 90 days | ||
| Urine | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
CYCLIC AMP
1.3-3.7 nmol/dL of glomerular filtrate
CREATININE, SERUM
Males
0-11 months: 0.17-0.42 mg/dL
1-5 years: 0.19-0.49 mg/dL
6-10 years: 0.26-0.61 mg/dL
11-14 years: 0.35-0.86 mg/dL
≥15 years: 0.74-1.35 mg/dL
Females
0-11 months: 0.17-0.42 mg/dL
1-5 years: 0.19-0.49 mg/dL
6-10 years: 0.26-0.61 mg/dL
11-15 years: 0.35-0.86 mg/dL
≥16 years: 0.59-1.04 mg/dL
CREATININE, URINE
No reference values apply. Interpret with other clinical data.
Day(s) Performed
Wednesday
Report Available
2 to 10 daysCPT Code Information
82030
82570
82565