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Test ID FPFUZ Phenosense Entry HIV Drug Resistance Assay

Method Name

CD4 cell culture assay for phenotypic recombinant virus

Reporting Name

Phenosense Entry Fuzeon

Specimen Type

Plasma EDTA

Specimen Required

Draw blood into two 5-mL PPT (pearl top) or EDTA (lavender top) tube. Immediately centrifuge (within 2 hours of collection) at 1000-1200xg at room temperature for 10-15 minutes. Do not allow samples to remain in centrifuge after centrifugation. Remove plasma from cells immediately and transfer to a plastic screw-cap tube. Freeze immediately. Send 3 mL plasma in a screw-cap vial frozen. 



1. Patient's most recent viral load

2. Viral load collection date



1. Intended for use only for patients with viral loads greater than or equal to 500 copies/mL. For best results, viral loads should be confirmed within two weeks prior to submission for testing at Monogram.

2. Patient samples submitted <30 days apart are considered duplicate and will be canceled.

Specimen Minimum Volume

1.0 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Plasma EDTA Frozen

Reference Values

A final report will be attached in MayoAccess.

Day(s) Performed

Monday through Friday

Performing Laboratory

Monogram Biosciences, Inc

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FPFUZ Phenosense Entry Fuzeon 45182-3


Result ID Test Result Name Result LOINC Value
Z1041 Phenosense Entry Fuzeon 45182-3

Report Available

14 to 21 days

NY State Approved