< Return to Virtual Testing Guide

Prolactin

Test Code: 746

CPT Code(s): 84146

Methodology: Immunoassay (IA)

< Return to Virtual Testing Guide

Tree Nut Allergy

Test Code: 94462

CPT Code(s): 86003 (x9)

Includes: IgE allergy testing for: Macadamia Nut (RF345), Pecan Nut (F201), Brazil Nut (F18), Walnut (F256), Cashew Nut (F202), Pistachio (F203), Hazelnut (F17), Almond (F20), Peanut (F13)

Methodology: Immunoassay

< Return to Virtual Testing Guide

Fecal Globin by Immunochemistry (Insure FIT)

Test Code:
Non-Medicare: 11290
Medicare: 11293

CPT Code(s):
Non-Medicare: 82274
Medicare: 82274 or HCPCS-G0328
When diagnostic testing for a Medicare Patient is required for Fecal Globin by Immunochemistry (InSure™) testing, please order test code 11290-Fecal Globin by Immunochemistry (InSure™)

Methodology: Immunochromatography

< Return to Virtual Testing Guide

T3, Total

Test Code: 859

CPT Code(s): 84480

Methodology: Immunoassay (IA)

Clinical Significance: Total T3 measurements are used to diagnose and monitor treatment of hyperthyroidism and are essential for recognizing T3 toxicosis.

Additional names: Triiodothyronine

< Return to Virtual Testing Guide

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)

< Return to Virtual Testing Guide

T4 Free, Direct Dialysis

Test Code: 35167

CPT Code(s): 84439

Methodology: Direct Equilibrium Dialysis Radioimmunoassay (RAI)
Laboratory Developed Test (LDT) - This was developed and its analytical performance characteristics have been deteremined by Quest Diagnostics Nichols Institute, Chantilly, VA. It has not been cleared or approved by the FSA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

< Return to Virtual Testing Guide

ANA Screen, IFA, Reflex Titer/Pattern, and Reflex to Multiplex 11 Ab Cascade

Test Code: 16814

CPT Code(s): 86038

Methodology: Immunofluorescent Assay (IFA)

Clinical Significance: Antinuclear antibodies are associated with rheumatic diseases including Systemic Lupus Erythematous (SLE), mixed connective tissue disease, Sjogren's syndrome, scleroderma, polymyositis, CREST syndrome, and neurologic SLE.

Includes: The ANA Screen, IFA, Reflex Titer/Pattern, and Reflex to Multiplex 11 Ab Cascade begins with an ANA Screen, IFA.

< Return to Virtual Testing Guide

Glucose, Plasma

Test Code: 484

CPT Code(s): 82947

Methodology: Spectrophotometry (SP)

Clinical Significance:Plasma glucose levels may be abnormally high (hyperglycemia) or abnormally low (hypoglycemia). Glucose measurements are used in the diagnosis and treatment of carbohydrate metabolic disorders including diabetes mellitus, idiopathic hypoglycemia, and pancreatic islet cell neoplasm.

< Return to Virtual Testing Guide

Albumin

Test Code: 223

CPT Code(s): 82040

Methodology: Spectrophotometry (SP)

< Return to Virtual Testing Guide

Rheumatoid Factor

Test Code: 4418

CPT Code(s): 86431

Methodology: Immunoturbidimetry

Clinical Significance: Elevated RF is found in collagen vascular diseases such as SLE, rheumatoid arthritis, scleroderma, Sjögren's Syndrome, and in other conditions such as leprosy, tuberculosis, syphilis, malignancy, thyroid disease and in a significant percentage of otherwise normal elderly patients.

Alternative Name(s): RF

Pages