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Tricyclic Antidepressant Level

Clinical System Name

Miscellaneous Test


None specified

Sample Requirements

Specimen: Whole Blood

Container(s): Dark Green/Sodim Heparin or Red or Gold SST or Lt. Green/Li Heparin Microtainer or Gold Microtainer

Preferred Vol: 1mL

Minimum Vol: 0.6 mL


Note: This test is used for stat toxic screen only. Indicate concurrent medications on requisition.

Processing Instructions

Reject due to:

Spin: Y


Temp: -20 C

Storage location: If drawn in gold top; serum must be removed from gel within 24 hours of collection. No addon testing to gel tubes over 24 hours old. Hemolysis should be avoided. Centrifuge specimen. Transfer 0.5 mL serum or plasma to a plastic aliquot tube. Deliver specimen to CPA freezer send-outs rack.


Off-site collection:


Specimen Type Temperature Time
Serum or Plasma Room temp  N
  Refrigerated 24 h
  Frozen  Y



STAT Performed TAT
N  Drawn Daily; performed Su - F 3 - 5 d


Performing Laboratory

Harborview Medical Center



Harborview Medical Center

Room GWH47; 325 9th Ave
Seattle, WA 98104

Phone Number: (206) 744-3451


Reference Range


Subtherapeutic <100
Therapeutic 100-300
Toxicity possible 300-500
Toxicity probable 500-1000
Serious toxicity >1000



Method: EMIT

Analytical Volume: 0.3 mL Serum or Plasma


CPT Codes


Send Out Instructions


Reference Test Name: Tricyclics (Total) Semi-Quant
Reference Test Number: TTRI
Instructions: Order test in Mayo Access. Keep a copy of the Batch Sheet for our records. Send out Mon - Fri with the Mayo courier. Keep a copy of the Batch Sheet for our records.