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8771M
CYCLIC AMP, URINARY EXCRETION

Test Code 8771M 
Test CYCLIC AMP, URINARY EXCRETION 
Methodology High - Pressure Liquid Chromatography (HPLC)
Photometric, Picric Acid
Rate Jaffe 
Description Useful for differential diagnosis of hypercalcemia and as an adjunct to serum parathyroid hormone measurements, especially in the diagnosis of PTH resistance states, such as pseudohypoparathyroidism 
Specimen Both serum and urine are required for this test. Serum must be obtained at time of urine collection.

SERUM
Draw blood in either a plain red-top tube or serum gel tube. Spin down and send 1.0 mL (minimum: 0.5 mL) of serum FROZEN in a plastic vial on dry ice.
NOTE: Label specimen appropriately (serum).

URINE
13 mL (minimum: 10 mL) from a random urine collection. Send specimen FROZEN in plastic container on dry ice.
NOTE: Label specimen appropriately (urine). 

Reference Values 1.3 - 3.7 nmol/dL of glomerular filtrate 
Analytic Time 2 Days 
Day(s) Test Set Up Wednesday 
CPT Code(s) 82030