Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/22/2025

Initiating Antiretroviral Therapy in Newly Diagnosed HIV Patients

General Recommendations

  • The American Academy of HIV Medicine recommends starting antiretroviral therapy (ART) as soon as possible after HIV diagnosis, including same-day start, unless the patient is not ready to commit to starting therapy 1, 2, 3
  • ART should be initiated immediately upon diagnosis for all newly diagnosed HIV patients who are ready to commit to treatment, regardless of CD4 count or viral load 1, 2, 3, 4
  • Same-day or rapid start (within 7-14 days) is strongly recommended, with benefits including improved viral suppression rates, faster time to viral suppression, and better retention in care 5, 6
  • Structural barriers must be removed to allow ART initiation at the first clinic visit if the patient and clinician determine this is appropriate 1, 2, 3, 4

Pre-Treatment Laboratory Testing

  • Baseline labs, including HIV-1 RNA level, CD4 cell count, HIV genotype for resistance testing, hepatitis B and C screening, and basic chemistries, should be drawn before starting ART, but treatment should not be delayed while waiting for results 1, 4, 7, 8
  • HLA-B*5701 testing must be available before starting abacavir-containing regimens 1, 4, 7

Regimen Selection

  • The International AIDS Society recommends avoiding NNRTIs and abacavir for rapid ART start, and instead using regimens such as bictegravir/TAF/emtricitabine, dolutegravir plus TAF/emtricitabine, or raltegravir plus TAF (or TDF)/emtricitabine 1, 4, 7, 8
  • Dolutegravir/abacavir/lamivudine and rilpivirine-based regimens are not recommended for rapid start due to requirements for baseline testing and specific patient characteristics 1, 4, 8

Special Circumstances

  • For most opportunistic infections, ART should be started within 2 weeks of diagnosis 1, 2, 3, 4, 9
  • For tuberculosis, ART should be started within 2 weeks of TB treatment initiation for patients with CD4 <50 cells/μL, and within 2-8 weeks for patients with CD4 ≥50 cells/μL 1, 2, 3, 4, 6, 9
  • For cryptococcal meningitis, ART should be delayed for 4-6 weeks after starting antifungal therapy, except in cases where the patient has clinically improved and can be closely monitored 2, 3, 10
  • For malignancy, ART should be started immediately, with attention to drug-drug interactions 1, 4, 7, 8, 9, 11

Prophylaxis Considerations

  • Pneumocystis pneumonia prophylaxis should be initiated for patients with CD4 <200 cells/μL 1, 4, 7, 8, 11
  • MAC prophylaxis is no longer recommended if effective ART is initiated 1, 4, 7, 8, 11
  • Cryptococcal prophylaxis is not recommended in high-resource settings with low disease prevalence 1, 4, 7, 8, 11

Pregnancy and Common Pitfalls

  • Pregnant individuals should initiate ART immediately for their own health and to reduce vertical transmission risk 1, 4, 7, 8, 11
  • ART should not be delayed waiting for complete laboratory results, except for HLA-B*5701 testing if using abacavir 1, 4, 7
  • Abacavir and NNRTIs should not be used for same-day start due to requirements for baseline testing 1, 4, 7
  • ART should not be started early in cryptococcal meningitis without meeting strict clinical criteria 2, 3, 10

REFERENCES

10

Timing of ART Initiation After Cryptococcal Meningitis Diagnosis in HIV Patients [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025