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Test Code FDILT Diltiazem (Cardizem, Dilacor)

Reporting Name

Diltiazem (Cardizem,Dilacor)

Performing Laboratory

Medtox Laboratories, Inc.

Specimen Type


Specimen Required

Submit only 1 of the following specimens:



Draw blood in a green-top (sodium heparin) tube(s), plasma gel tube is not acceptable. Spin down and send 3 mL sodium heparin plasma refrigerated in a plastic vial.



Draw blood in a plain, red-top tube(s), serum gel tube is not acceptable. Spin down and send 3 mL of serum refrigerated in a plastic vial.

Specimen Minimum Volume

0.6 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Refrigerated (preferred) 14 days
  Frozen  180 days
  Ambient  72 hours

Reject Due To

Hemolysis NA
Lipemia NA
Icteric NA
Other NA

Reference Values

Reference Range: 50 - 200 ng/mL


Day(s) Performed

Monday through Sunday

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FDILT Diltiazem (Cardizem,Dilacor) 6898-1


Result ID Test Result Name Result LOINC Value
Z1188 Diltiazem 6898-1

Report Available

3 to 7 days

Method Name

High Performance Liquid Chromatography with Ultraviolet Detection (HPLC-UV)