Chagas Disease Serology (Sendout)

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General Information

Lab Name
Lab Code
1001
External Test Id
CDC-10458
Description

Ordering Requirements: A completed Washington State PHL Serology Requisition (or CDC 50.34 Specimen Submission Form, if sent directly) must accompany all submissions. Providers should coordinate with the LHJ epidemiologists or with the appropriate CDC lab contacts (if sending direct).

  • Seattle King Co. Public Health Epidemiologist: 206-296-4774
  • WA PHL Epidemiology (Main): 206-418-5500
  • CDC Chagas Disease Serology test guide (refer to "CDC Pre-Approval" section for points of contact).

Approval: Lab Medicine Resident or Microbiology Fellow approval required. Testing must be coordinated with LHJ epidemiologists or directly with the CDC.

Forms & Requisitions
Synonyms
American trypanosomiasis, CDC-10458, T. cruzi, Trypanosoma cruzi

Interpretation

Method

Antibody Detection, EIA, ELISA, Indirect Fluorescent Antibody Assay

Interferences and Limitations

Substances known to interfere with immunoassays include: bilirubin, lipids, and hemoglobin.

Guidelines

Ordering & Collection

Specimen Type
Blood
Collection

3 mL blood in RED TOP tube or GOLD SST

Forms & Requisitions
Approval Required
Lab Medicine Resident or Microbiology Fellow approval required.
Handling Instructions
Quantity
requested: 1 mL serum
minimum: 0.5 mL serum

Processing

Processing

Centrifuge sample and transfer serum to a separate, plastic vial. Freeze serum at -20°C.

Login: SPMSND-;FREEZE

  • MSNDTO: CDC
  • MSPTYP: SRM
  • MTSTRQ: ;Chagas Disease Serology (CDC Test CDC 10458)

Sendouts: Samples may be sent to WPHL or directly to the CDC, depending on instruction from the LMR/Micro Fellow.

To CDC via Washington State Public Health Lab:

  • Provider must complete the WPHL Serology Requisition. Add the CAST fax number to the form to ensure proper result routing.
  • Send sample with the DLMP courier or Delivery Express courier.

Direct Submission to CDC:

  • CDC Test: CDC-10458.
  • To prevent sample rejections, review the CDC requisition for completion prior to shipment.
    • There must be two matching patient identifiers present on the sample and on the CDC requisition. One identifier must be the name, the other identifier can be the MRN, specimen ID, or date of birth. Note that because Sunquest CID labels do not contain the DOB, then either or the MRN or specimen ID must be included on the requisition or the date of birth added to the specimen label.
    • Requisitions that are pre-filled by the provider may require additional information to be added after sample collection. This may include: collection date, sample type, date sent to CDC, specimen ID number, etc. Per CDC requirements, additional information may be written on an electronically completed form as long as it is initialed by lab staff making the correction/addition.
    • CAST must be entered as the "intermediate submitter" to ensure that result reports are properly routed to the lab from the WAPHL.
  • Send sample on dry ice Monday - Thursday only via FedEx Priority Overnight.

Stability: Frozen: 8 weeks; Refrigerated: 7 days.

Performance

LIS Dept Code
Performing Location(s)
Sendout Centers for Disease Control and Prevention
855-612-7575

1600 Clifton Road NE
Atlanta, GA 30333
Frequency
Turnaround Time: 3 weeks.
Available STAT?
No

Billing & Coding

CPT codes
Billing Comments

No charge for CDC testing.

LOINC