Author

Rachel Petrola

3 papers indexed here

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Review Oct 2026

A-163 Elevated Serum Estradiol in Levonorgestrel-Releasing Intrauterine System Users: A Case Series Highlighting Post-Analytical Challenges

The levonorgestrel-releasing intrauterine system (LNG-IUS) acts predominantly at the endometrial level without consistently suppressing the hypothalamic–pituitary–gonadal axis. Residual ovarian activity may persist, occasionally resulting in functional follicular cysts capable of producing estradiol. Serum estrad...

Marina P. Bezerra de Menezes, Rachel Petrola, Milena G. Teles et al. · Clinical Chemistry · 0 citations

Oct 2026

A-030 LDL-C and Apolipoprotein B Concordance Across Different Thresholds: Impact of Hypertriglyceridemia in a Real-World Laboratory Cohort

Low-density lipoprotein cholesterol (LDL-C) remains the primary target for cardiovascular risk reduction; however, it reflects cholesterol content rather than the total number of circulating atherogenic particles. Apolipoprotein B (ApoB), present in one copy per atherogenic lipoprotein particle, more directly rep...

M. Bezerra, Alice Petrola Bezerra Sayao, Rachel Petrola et al. · Clinical Chemistry · 0 citations

Review Oct 2026

B-140 Performance and Workflow Impact of Automated Image Analysis in High-Volume ANA HEp-2 IIF Screening

Indirect immunofluorescence (IIF) on HEp-2 cells remains the reference standard for ANA screening, providing semi-quantitative titers and clinically relevant fluorescence patterns. Despite its high sensitivity, it lacks specificity, and interpretation is influenced by population characteristics, analytical variab...

Clara Arraes, Rachel Petrola, Lais Masullo · Clinical Chemistry · 0 citations