Primary Care

Test code: 16796

CPT code: 83993

Methodology: Chemiluminescence (CL)

Limitations: NSAIDs may cause elevated results.

Wall Charts can be ordered by emailing DLOClientSupply@questdiagnostics.com or you can download/print the chart by clicking on the disc or printer icon above the chart below:

Test Code: 948

CPT Code: 84202

Alternative Name(s): Free Erythrocyte Protoporphyrin, Protoporphyrin, Zinc, ZPPP

Methodology: Hematofluorometry

Clinical Significance: Zinc protoporphyrin is elevated in chronic lead poisoning and iron deficiency anemia. Its measurement is commonly included in screening for lead exposure, and in evalutation of anemia. This assay is not recommended for monitoring acute intermittent porphyria.

Test Code: 5509

CPT Code: 82140

Alternative Name(s): Not applicable

Methodology: Enzymatic

Test Code: 443

CPT Code(s): 82055

Includes: Alcohol, Ethyl

Methodology: Gas Chromatography (GC)

Alternative Name(s): Alcohol, Ethyl

Test Code: 805

CPT Code(s): 80196

Includes: Salicylate

Methodology: Enzymatic/Colormetric

Test Code: 561

CPT Code(s): 83525

Methodology: Immunoassay (IA)

Clinical Significance: For diagnosis and monitoring of diabetes and insulin-secreting tumors.

Alternative Name(s): Fasting insulin, Immunoreactive insulin, Insulin level

Test Code: 718

CPT Code(s): 84100

Methodology: Spectrophotometry (SP)

Test Code: 6745

CPT Code(s): 82951 & 82952

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.

Includes: Fasting, 1-hour, 2-hours, 3-hour glucose

Test Code: 4212

CPT Code(s): 82533

Methodology: Immunoassay (IA)

Clinical Significance: Cortisol is increased in Cushing's Disease and decreased in Addison's Disease (adrenal insufficiency).

Alternative Name(s): N/A