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Calcium
MessagePerformed in Chemistry
Test Code
CA
CPT Codes
82310
Preferred Specimen
Green Top LiHep, Plasma
WyMCC - SST
WyMCC - SST
Other Acceptable Specimens
Gold/SST or Red Top
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Plasma EDTA
Hemolysis
Hemolysis
Setup Schedule
Daily, Sunday through Saturday
Report Available
Less than 4 hours
Clinical Significance
Calcium is most abundant mineral element in body with about 99 percent in bones primarily as hydroxyapatite. Remaining calcium is distributed between various tissues and extracellular fluids where it performs a vital role for many life sustaining processes. Among extra skeletal functions of calcium are involvement in blood coagulation, neuromuscular conduction, excitability of skeletal and cardiac muscle, enzyme activation, and preservation of cell membrane integrity and permeability.
Serum calcium levels and hence body content are believed to be controlled by parathyroid hormone (PTH), calcitonin, and vitamin D. Imbalance in any of these modulators leads to alterations of body and serum calcium levels. Increases in serum PTH or vitamin D are ususally associated with hypercalcemia. Increased serum calcium levels may also be observed in multiple myeloma and other neoplastic diseases. Hypocalcemia may be observed in hypoparathyroidism, steatorrhea, nephrosis, and pancreatitis.
Serum calcium levels and hence body content are believed to be controlled by parathyroid hormone (PTH), calcitonin, and vitamin D. Imbalance in any of these modulators leads to alterations of body and serum calcium levels. Increases in serum PTH or vitamin D are ususally associated with hypercalcemia. Increased serum calcium levels may also be observed in multiple myeloma and other neoplastic diseases. Hypocalcemia may be observed in hypoparathyroidism, steatorrhea, nephrosis, and pancreatitis.
Performing Laboratory
system
