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Giardia Antibodies

Clinical System Name

Miscellaneous Test


Giardia Lamblia IgG, IgA, IgM Antibody Panel


Sample Requirements

Specimen: Whole blood

Container(s): Red or Gold SST or Gold Microtainer

Preferred Vol: 4.0 mL

Minimum Vol: 0.2 mL



Processing Instructions

Reject due to:

Spin: Y

Aliquot: Y

Temp: 2 - 4 C

Storage location:  Spin sample and transfer into plastic aliquot tube. Store sample in CPA room temperature send-outs rack.


Off-site collection: Spin sample and transfer into plastic aliquot tube. Transport room temperature.


Specimen Type Temperature Time
Serum Room temp

7 d

  Refrigerated 14 d

30 d



STAT Performed TAT
N Drawn daily; Set-up: T - Sa at Quest 2 - 4 d


Performing Laboratory

Quest Diagnostics - Nichols Institute

33608 Ortega Highway
San Juan Capistrano, CA 92675-2042


Phone Number: (800) 553-5445


Department:  Send Outs


Phone Number: (206) 987-2563

Reference Range

Giardia lamblia IgG <1:16
Giardia lamblia IgA <1:16
Giardia lamblia IgM <1:20



Method: Immunofluorescence Assay (IFA)

Analytical Volume: 0.08 mL serum


CPT Codes

86674 x 3



Clinical Utility

Recent or current infection by Giardia lamblia is suggested by either detection of IgM antibody or a four-fold increase in IgG and/or IgA antibody titers between acute and convalescent sera. Positive IgG and/or IgA without detectable IgM suggests past infection.

Send Out Instructions


Reference Test Name: Giardia lamblia IgG, IgM, and IgA Antibody Panel, IFA
Reference Test Number:



Send out M - F with the Quest courier.