18 - 23 days
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CD4 cell culture assay for phenotypic recombinant-virus co-receptor tropism.
Phenotypic determination of the type of co-receptor (CCR5, CXCR4, or both) used by the patient's HIV-1 strain to enter host CD4+ cells (HIV-1 entry co-receptor tropism).
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in a lavender top or PPT (pearl top) tube. Deliver to Specimen Processing immediately. Must be spun and frozen within 2 hours.
Collect specimen in a lavender top or PPT (pearl top) tube. Centrifuge, aliquot plasma into a plastic vial within 2 hours of collection and freeze.