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"Latar belakang: Aspergillosis paru kronik (APK) menjadi salah satu penyakit yang sering ditemukan pada pasien dengan kerusakan jaringan paru, misalnya tuberkulosis (TB). Deteksi antibodi Aspergillus merupakan modalitas utama pendukung diagnosis APK. Penelitian ini, bertujuan untuk mengetahui cut-off optimal ELISA manual Bordier dalam deteksi antibodi Aspergillus di Indonesia. Metode: Penelitian ini menggunakan desain studi potong lintang. Pemeriksaan sampel menggunakan metode ELISA manual Bordier sebagai uji diagnostik APK. Data yang diperoleh dianalisis untuk menentukan cut-off optimal pemeriksaan.Hasil: Sebagian besar subjek penelitian merupakan kelompok usia <60 tahun (89,1%) dengan rentang usia 17-72 tahun dan median 34 tahun. Cut-off optimal memberikan sensitivitas 43,48% dan spesifitas 100%. Sedangkan, sensitivitas pada cut-off 0.780, 0.850 dan 0.930 menunjukkan sensitivitas yang lebih baik dibandingkan dengan cut-off 1,595 dan cut-off pabrik (>1,0). Diabetes (15,6%) dan asma (10,9%) diketahui menjadi temuan yang lebih banyak pada pasien APK dibandingkan penyakit komorbid lainnya. Kesimpulan: ELISA manual Bordier cut-off 1,595 dengan spesifitas 100%, dapat menjadi alat skrining awal diagnosis APK. Hasil positif pada pemeriksaan disertai gejala klinis dan radiologis mengarah APK dapat digunakan untuk menegakkan diagnosis, sedangkan hasil negatif membutuhkan investigasi lanjut dengan pemeriksaan ELISA otomatis.

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Introduction: Chronic pulmonary aspergillosis (APK) is one of the diseases that are often found in patients with lung tissue damage, for example tuberculosis (TB). Aspergillus antibody detection is the main modality supporting the diagnosis of APK. This study aims to determine the optimal cut-off of Bordier's manual ELISA in the detection of Aspergillus antibodies in Indonesia.

Method: This study used a cross-sectional study design. Sampel examination using Bordier's manual ELISA method as a diagnostic APK test. The data obtained are analyzed to determine the optimal cut-off of the examination.

Result: Most of the study subjects were <60 years old age group (89.1%) with an age range of 17-72 years and a median of 34 years. The optimal cut-off provides 43.48% sensitivity and 100% specificity. Meanwhile, the sensitivity at cut-offs of 0.780, 0.850 and 0.930 showed better sensitivity compared to cut-offs of 1.595 and factory cut-offs (>1.0). Diabetes (15.6%) and asthma (10.9%) are known to be more common in APK patients than other comorbid diseases.

Conclusion: ELISA manual Bordier cut-off 1,595 with 100% specificity, can be an early screening tool for APK diagnosis. Positive results on examination accompanied by clinical and radiological symptoms leading to APK can be used to establish a diagnosis, while negative results require further investigation with automated ELISA examination."

"Latar belakang: Indonesia memiliki beban tuberkulosis yang tinggi. Kerusakan paru yang ditimbulkan mendasari terjadinya aspergillosis paru kronik (APK). Salah satu kriteria diagnosis APK ialah bukti keterlibatan Aspergillus. Mempertimbangkan keterbatasan kultur, deteksi antibodi ELISA menjadi modalitas alternatif. Penelitian ini bertujuan membandingkan performa diagnostik pemeriksaan IgG spesifik Aspergillus ELISA manual dan otomatis pada pasien riwayat TB paru. Metode: Penelitian potong lintang ini membandingkan pemeriksaan IgG spesifik Aspergillus ELISA manual Bordier dan ELISA otomatis Immulite menggunakan serum pasien dengan riwayat TB. Performa diagnostik dibandingkan dalam bentuk proporsi hasil positif, sensitivitas, spesifisitas, nilai duga positif, nilai duga negatif. Hasil: Terdapat total 68 subjek, dengan median usia 34,5 tahun, proporsi lansia 11,76% dan proporsi laki-laki 42,65%. Proporsi hasil positif pemeriksaan IgG spesifik Aspergillus ELISA manual dan ELISA otomatis masing-masing 13,24% dan 48,53%. Pemeriksaan IgG spesifik Aspergillus ELISA manual memiliki sensitivitas 20,83%, spesifisitas 90,91%, nilai duga positif 55,56%, dan nilai duga negatif 67,80%. Pemeriksaan IgG spesifik Aspergillus ELISA otomatis menunjukkan sensitivitas 91,67%, spesifisitas 75%, nilai duga positif 66,67%, dan nilai duga negatif 94,29%. Kesimpulan: Performa diagnostik dan teknis pemeriksaan IgG spesifik Aspergillus ELISA otomatis lebih baik dibandingkan ELISA manual, tetapi pemilihan modalitas diagnosis perlu mempertimbangkan faktor keterjangkauan, aksesibilitas, dan akurasi sesuai kebutuhan dan ketersediaan sumber daya.

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Introduction: Indonesia has high tuberculosis (TB) burden. The resulting lung damage underlies chronic pulmonary aspergillosis (CPA) development. CPA is diagnosed in patients with evidence of Aspergillus involvement as one of its criteria. Taking into account the limitations of culture, ELISA antibody detection becomes alternative modality. This study aims to compare diagnostic performance between manual and automated ELISA for Aspergillus-specific IgG in patients with treated TB. Method: This cross-sectional study compares Aspergillus-specific IgG test using Bordier manual ELISA and Immulite automated ELISA on sera from patients with treated TB. Diagnostic performance was compared in positive test proportion, sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV). Result: There are 68 subjects, with median age of 34,5 years, elderly subjects proportion of 11,76%, male proportion of 42,65%. Positive results proportion from Aspergillus-specific IgG manual and automated ELISA are 13,24% and 48,53%, respectively. Manual ELISA shows 20,83% sensitivity, 90,91% specificity, 55,56% PPV, 67,80% NPV. Automated ELISA shows 91,67% sensitivity, 75% specificity, 66,67% PPV, 94,29% NPV. Conclusion: Technical and diagnostic performance of automated ELISA Aspergillus-specific IgG test is better than manual ELISA, but choosing diagnostic modality needs consideration on factors such as affordability, accessibility, and accuracy according to the needs and available resources."