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
Test Code: 8578
CPT Code(s): 80202
Includes: Vancomycin peak
Test Code: 8579
CPT Code(s): 80202
Includes: Vancomycin trough
Test Code: 917
CPT Code(s): 80202
Includes: Vancomycin peak and trough
Methodology: Immunoassay (IA)
Test Code: 5463
CPT Code(s): 81001
Includes: Macroscopic and Microscopic Examinations
**This order code does not include Reflex to Culture**
If reflex to culture is desired: Please order Test Code 3020, “Urinalysis, Complete, with Reflex to Culture”
Methodology: Reagent Impregnated Strips/Tablets/Microscopic Examination
