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Phosphate (as Phosphorus)

Test Code: 718

CPT Code(s): 84100

Methodology: Spectrophotometry (SP)

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Prealbumin

Test Code: 4847

CPT Code(s): 84134

Methodology: Nepholometry

Clinical Significance: Prealbumin is decreased in protein-calorie malnutrition, liver disease, and acute inflammation. It may be used as an indicator of nutritional requirements and response to therapy during total parenteral nutrition and as a biochemical marker of nutritional adequacy in premature infants.

Alternative Name(s): Transthyretin, Thryoxine Binding Preablumin

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QuantiFERON TB Gold Plus (QFT-Plus), 1Tube

Test Code: 36970

CPT Code(s): 86480

Methodology: Immunoassay (IA)

Clinical Significance: QuantiFERON®-TB Gold IT is an indirect test for M. tuberculosis infection (including disease) and is intended for use in conjunction with risk assessment, radiography and other medical and diagnostic evaluations.

Alternative Name(s): TB Gold, QFT Gold Plus, QFT TB, QFT Plus, IGRA

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Potassium, Plasma

Test Code:11014

CPT Code(s): 84132

Includes: Potassium

Methodology: Ion Selective Electrode (ISE)

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Protein, Total, Serum

Test Code: 754

CPT Code(s): 84155

Includes: Total Protein

Methodology: Spectrophotometry (SP)

Clinical Significance: Total protein is useful in evaluating patients for nutritional status, liver disease, protein-losing renal and gastrointestinal diseases, and many other medical conditions. Elevated concentrations may be observed in patients with monoclonal gammopathies, autoimmune hepatitis, inflammation, and other medical conditions.

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Potassium, Serum

Test Code: 733

CPT Code(s): 84132

Includes: Potassium

Methodology: Ion Selective Electrode (ISE)

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Renal Function Panel

Test Code: 10314

CPT Code(s): 80069

Methodology: See individual tests for specific methodolgy

Clinical Significance: See individual tests for clinical significance

Includes: Albumin, BUN/Creatinine Ratio (calculated), Calcium, Carbon Dioxide, Chloride, Creatinine, Estimated Glomerular Filtration Rate (calculated), Glucose, Phosphate (as Phosphorus), Potassium, Sodium, Urea Nitrogen

Alternative Name(s): N/A

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RPR Testing

Test Code:
RPR (Diagnosis) w/ Reflex to Titer and Confirmatory Testing: 36126
RPR (Montior) w/ Reflex to Titer: 799
RPR, Premarital w/ Relfex to Titer: 4120

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Prolactin

Test Code: 746

CPT Code(s): 84146

Methodology: Immunoassay (IA)

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QuestAssureD 25-Hydroxy and 1,25-Dihydroxyvitamin D, LC/MS/MS

Test Code: 16761

CPT Code(s): 82306, 82652

Includes: 92888 QuestAssureD™ 25-Hydroxyvitamin D (D2, D3), LC/MS/MS and 16558 Vitamin D, 1,25-Dihydroxy, LC/MS/MS

Methodology: Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

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