CALCIUM

Code
400.1200
Name
CALCIUM
Category
None
Department
Chemistry
Start Date
Expiration Date
Synonyms
CA; CA-
CPT Codes
82310
Site
Main Lab
Reference Test
ATLAS Test Code

CA

Specimen Information

Type

Gold, SST

Volume

1.0 ml

Transport Info

Room Temperature 7 day stability Refrigerated 3 week stability Frozen 8 month stability

Fasting Required?
False
Patient Instructions

Reference Range

9-10.5 mg/dL Critical low: <6 mg/dL Critical high: >12 mg/dL

Methodology

Ion-selective Electrode (ISE)

Clinical Significance

Used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease, and tetany (intermittent muscular contractions or spasms). Serum calcium is usually measured to screen for or monitor diseases of the bone or calcium regulation disorders (that is, diseases of the parathyroid gland or kidneys). Ionized calcium is measured when other factors complicate the interpretation of the normal serum calcium test (for example, the presence of abnormal amounts of albumin or immunoglobulins). Measurement of the serum calcium level is useful for determining the cause of kidney or thyroid problems and if an appropriate amount of vitamin D has been present in the person's body. All cells require calcium for numerous functions. Calcium is especially important in the structure of bones and in neuromuscular activity.

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