Primary Care

Test Code: 483

CPT Code(s): 82947

Methodology: Spectrophotometry (SP)

Limitations: Glucose levels may be depressed if sample is left to clot and not spun for an excessive length of time.

Test Code: 622

CPT Code(s): 83735

Methodology: Spectrophotometry (SP)

Clinical Significance: Magnesium measurements are used in the diagnosis and treatment of hypomagnesemia (abnormally low plasma levels of magnesium) and hypermagnesemia (abnormally high plasma levels of magnesium). Magnesium is decreased in chronic nephritis, acute pancreatitis, and alcoholic cirrhosis. It is increased in acute or chronic renal failure and Addison's Disease.

Alternative Name(s): MAG

Test code: 678

CPT code(s): 83935

Methodology: Freezing Point Depression

Clinical Significance: For assessing the concentrating ability of the kidney

Alternative Names: N/A

Test Code: 677

CPT Code(s): 83930

Supply: #T64 Red Serum (6mL, no gel)

Methodology: Freezing Point Depression

Clinical Significance: Serum osomolality is increased in hypernatremia, hyperglycemia, uremia, ethanol, methanol, or ethylene glycol overdoses, and in diabetes insipidus.

Additional names: N/A

Test Code: 8477

CPT Code(s): 82950

Methodology: Spectrophotometry (SP)

Clinical Significance: A value of 135 mg/dL or greater indicates the need for a full diagnostic, gestational glucose tolerance performed in the fasting state to determine if the patient has gestational diabetes.

Test Code: 873

CPT Code(s): 84403

Supply: #T157 Red/Yellow SST 8mL

Methodology: Immunoassay

Limitations: Immunoassay does not provide sufficient sensitivity in detecting low concentrations among non-adults and women.

Test Code: 4420

CPT Code(s): 86140

Methodology: Nephelometry

Limitations: Oral contraceptives, IUDs, pregnancy, and menstruation may raise CRP levels. Levels are lowest during ovulation.

Test Code: 8396

CPT Code(s): 84702

Methodology: Immunoassay (IA)

Limitations: Heterophilic antibodies may produce low false-positive results; urinary hCG is negative if "phantom" hCG is suspected. Pituitary secretion may be a source of low level hCG in post menopausal women

Test Code: 374

CPT Code(s): 82550

Methodology: Spectrophotometry (SP)

Clinical Significance: Test for myocardial infarction and skeletal muscle damage. Elevated results may be due to: myocarditis, myocardial infarction (heart attack), muscular dystrophy, muscle trauma or excessive exercise.

Alternative Name(s): CK, CPK

Vancomycin, Peak

Test Code: 8578
CPT Code(s): 80202
Includes: Vancomycin peak
 

Vancomycin, Trough

Test Code: 8579
CPT Code(s): 80202
Includes: Vancomycin trough

Vancomycin, Total

Test Code: 917
CPT Code(s): 80202
Includes: Vancomycin peak and trough

Methodology: Immunoassay (IA)