Lab Work (Sept 07) : Drug Resistance Testing

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Back to home » HIV 101 » POZ Focus » Lab Work (Sept 07)

Table of Contents

Blood Matters

El doctor dice

Complete Blood Count

CD4 Cell Count

HIV Viral Load

Drug Resistance Testing

Two Newcomers

The Chem Screen

Our Cover Story

What You're Talking About
6 Positive Life Changes That Come With HIV (55 comments)

The Cure For HIV Is Not Around the Corner (17 comments)

How Do We Solve a Problem Like Pintauro? (blog) (11 comments)

Older, Wiser, Ready for Their Close-Up (11 comments)

Charlie Sheen: I Have HIV, Am Undetectable and Paid $10M in Shakedowns (10 comments)

Infections Lead to Many Cancers Among People With HIV (4 comments)
Most Popular Lessons

The HIV Life Cycle


Herpes Simplex Virus

Syphilis & Neurosyphilis

Treatments for Opportunistic Infections (OIs)

What is AIDS & HIV?

Hepatitis & HIV


Drug Resistance Testing

What it measures: HIV can mutate to become resistant to drugs. Resistance testing helps identify the meds that still work against HIV when others fail—or the meds you might not benefit from before you start treatment.

When it’s used: Before treatment is started (to see if you were possibly infected with drug-resistant HIV), when viral load increases while on treatment and when choosing meds to use during pregnancy. Genotyping and phenotyping tests are both available. Those with complex treatment histories might benefit from both tests.

Test Tip: The test can miss drug-resistant virus if the amount of HIV in your bloodstream is small (a viral load below 1,000). For best results, have blood drawn for the test before stopping or switching your treatment. If you haven’t started treatment, testing is best if only a few years have passed since the time of infection.

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