Fourth Generation

LOINC codes: 25835-0, 56888-1
Tests that measure Fourth Generation: Quest Diagnostics 1

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Quest Diagnostics, PrEP HIV-1/2 Antigen and Antibodies, Fourth Generation,Screen and HIV-1 RNA 13590

Population	Interval
PrEP HIV 1/2 Ag and Ab, Fourth Gen, Screen	Non-Reactive
PrEP HIV 1 RNA, QL Real Time PCR	Not Detected

Quest Diagnostics test catalog, 13590

Tests

Check the catalog code, specimen, method and preparation for every test that measures Fourth Generation. Select up to five tests to compare them side by side.

Quest Diagnostics 1 test

Panels that include this biomarker

PrEP HIV-1/2 Antigen and Antibodies, Fourth Generation,Screen and HIV-1 RNA 13590
4 analytes · Serum · Fasting not stated
Method and collection
Method
Immunoassay (IA) • Real-Time Polymerase Chain Reaction
Collection
Serum: Collect in a serum separator tube or red-top tube (no gel). The tube should be centrifuged after clotting. Spun serum separator tubes may be submitted at room temperature or refrigerated unopened without transfer to a plastic screw-cap vial. Red-top tube (no gel) serum should be transferred to a plastic screw-cap vial and submitted for testing. Plasma: Collect in an EDTA (lavender-top) tube and centrifuge tube within 24 hours of collection. Transfer plasma to a plastic screw-cap vial, label as plasma, and submit for testing. Submitted tubes must be labeled with patient identifier and submitted only for HIV testing.
Quest Diagnostics catalog page

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Sources

Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
LOINC 25835-0, 56888-1
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Fourth Generation
Registered studies that measure Fourth Generation, on the U.S. National Library of Medicine registry.

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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