ABSTRAK
HUBUNGAN KADAR VITAMIN D DENGAN KADAR KALSIUM DARAH PADA LANSIA DI LABORATORIUM PRODIA KEBAYORAN
Vita Anggita1, Putu Ayu Parwati2, M. Adreng Pamungkas3, Sri Idayani4
1,2,3,4 STIKes Wira Medika Bali.
Pendahuluan: Vitamin D berperan penting dalam absorpsi kalsium dan pemeliharaan kesehatan tulang. Pada lansia, proses penuaan dapat menurunkan sintesis vitamin D serta memengaruhi keseimbangan kalsium darah. Penelitian ini bertujuan mengetahui hubungan kadar vitamin D dengan kadar kalsium darah pada lansia di Laboratorium Prodia Kebayoran. Metode: Penelitian menggunakan desain observasional analitik dengan pendekatan cross-sectional. Data berupa hasil pemeriksaan laboratorium periode Februari 2025-Februari 2026 dengan sampel 250 pasien lansia yang dipilih menggunakan total sampling. Pemeriksaan vitamin D menggunakan metode Chemiluminescence Immunoassay (CLIA), sedangkan kalsium darah menggunakan metode fotometrik. Hasil: Sebanyak 209 responden (83,6%) memiliki kadar vitamin D normal, dengan rerata 44,22 ± 16,58 ng/mL. Sebanyak 234 responden (93,6%) memiliki kadar kalsium darah normal, dengan rerata 9,26 ± 0,47 mg/dL. Analisis: Uji korelasi Spearman rank menunjukkan nilai r = 0,151 dan p = 0,017, sehingga terdapat hubungan positif yang signifikan dengan kekuatan korelasi sangat lemah. Diskusi: Vitamin D berhubungan dengan kadar kalsium darah pada lansia, namun kadar kalsium juga dipengaruhi faktor fisiologis dan klinis lain.
Kata kunci: vitamin D, kalsium darah, lansia, Spearman rank.

ABSTRACT
THE RELATIONSHIP BETWEEN VITAMIN D LEVELS AND BLOOD CALCIUM LEVELS IN OLDER ADULTS AT PRODIA KEBAYORAN LABORATORY
Vita Anggita1, Putu Ayu Parwati2, M. Adreng Pamungkas3, Sri Idayani4
1,2,3,4 STIKes Wira Medika Bali.
Introduction: Vitamin D plays an important role in calcium absorption and the maintenance of bone health. In older adults, the aging process may reduce vitamin D synthesis and affect blood calcium balance. This study aimed to determine the relationship between vitamin D levels and blood calcium levels among older adults at Prodia Kebayoran Laboratory. Methods: This study employed an analytical observational design with a cross-sectional approach. Data were obtained from laboratory examination results from February 2025 to February 2026, involving 250 older adult patients selected using total sampling. Vitamin D levels were measured using the Chemiluminescence Immunoassay (CLIA) method, while blood calcium levels were measured using the photometric method. Results: A total of 209 respondents (83.6%) had normal vitamin D levels, with a mean of 44.22 ± 16.58 ng/mL. Meanwhile, 234 respondents (93.6%) had normal blood calcium levels, with a mean of 9.26 ± 0.47 mg/dL. Analysis: The Spearman rank correlation test showed r=0.151 and p=0.017, indicating a significant positive relationship with a very weak correlation. Discussion: Vitamin D levels were significantly associated with blood calcium levels in older adults; however, blood calcium levels may also be influenced by other physiological and clinical factors.
Keywords: vitamin D, blood calcium, older adults, Spearman rank.