Akurasi Metode LDL Perhitungan (Friedewald) dengan Metode Direct pada Kadar Lipid Normal

Febryani, Defi (2026) Akurasi Metode LDL Perhitungan (Friedewald) dengan Metode Direct pada Kadar Lipid Normal. Applied Bachelor thesis, Universitas Muhammadiyah Surabaya.

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Abstract

Latar belakang penelitian ini adalah pemeriksaan kadar Low Density Lipoprotein (LDL) merupakan salah satu parameter penting dalam penilaian risiko penyakit kardiovaskular. Metode perhitungan Friedewald masih banyak digunakan karena lebih sederhana dan ekonomis dibandingkan metode direct, namun akurasinya pada individu dengan kadar lipid normal masih perlu dievaluasi. Tujuan penelitian ini untuk mengetahui akurasi metode perhitungan Friedewald dibandingkan metode direct pada kadar lipid normal. Metode penelitian ini merupakan penelitian analitik komparatif dengan pendekatan cross sectional yang dilakukan di Laboratorium Klinik Farmalab Bangkalan pada Januari 2026 menggunakan 30 sampel serum yang memenuhi kriteria inklusi. Data dianalisis menggunakan uji paired t-test, regresi linear, dan analisis bias. Hasil penelitian menunjukkan rerata kadar LDL metode direct sebesar 138,74 ± 40,72 mg/dL, sedangkan metode Friedewald sebesar 138,48 ± 40,82 mg/dL. Hasil uji paired t-test menunjukkan tidak terdapat perbedaan yang bermakna antara kedua metode (p = 0,631). Hasil uji regresi linear sebesar 0,995 yang menunjukkan kesesuaian hubungan yang baik antara kedua metode. Analisis bias menunjukkan rata-rata bias sebesar -0,2583 mg/dL dengan persen bias -0,1156%, yang menunjukkan kesesuaian hasil yang sangat baik. Pembahasan penelitian ini menunjukkan bahwa pada kadar lipid normal, metode Friedewald mampu memberikan hasil yang sangat mendekati metode direct. Kesimpulan penelitian ini adalah bahwa metode Friedewald memiliki akurasi yang baik dan dapat digunakan sebagai alternatif pemeriksaan kadar LDL pada individu dengan kadar lipid normal.

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The background of this research is that the examination of Low Density Lipoprotein (LDL) levels is one of the important parameters in assessing the risk of cardiovascular disease. The Friedewald calculation method is still widely used because it is simpler and more economical compared to the direct method. However, its accuracy in individuals with normal lipid levels still needs to be evaluated. This study aims to determine the accuracy of the Friedewald calculation method compared to the direct method in individuals with normal lipid levels. This research method is a comparative analytical study with a cross-sectional approach conducted at the Farmalab Clinical Laboratory in Bangkalan in January 2026 using 30 serum samples that met the inclusion criteria. Data were analyzed using a paired t-test, linear regression, and bias analysis. The research results showed that the average LDL level using the direct method was 138.74 ± 40.72 mg/dL, while the Friedewald method was 138.48 ± 40.82 mg/dL. The paired t-test results indicated no significant difference between the two methods (p = 0.631). The linear regression test result was 0.995, indicating a good correlation between the two methods. The bias analysis showed an average bias of -0.2583 mg/dL with a bias percentage of -0.1156%, indicating very good result consistency. The discussion of this research shows that at normal lipid levels, the Friedewald method is able to provide results very close to the direct method. This study concludes that the Friedewald method has good accuracy and can be used as an alternative for measuring LDL levels in individuals with normal lipid levels.

Item Type: Thesis (Applied Bachelor)
Uncontrolled Keywords: Low Density Lipoprotein, metode Friedewald, direct LDL, akurasi, analisis bias, Low Density Lipoprotein, Friedewald method, direct LDL, accuracy, bias analysis.
Subjects: L Education > LB Theory and practice of education
R Medicine > R Medicine (General)
R Medicine > RA Public aspects of medicine
Divisions: 04. Fakultas Ilmu Kesehatan > D4 Ahli Teknologi Laboratorium Medis
Depositing User: DEFI FEBRYANI
Date Deposited: 01 Oct 2026 03:03
Last Modified: 01 Oct 2026 03:03
URI: https://repository.um-surabaya.ac.id/id/eprint/14624

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