International Journal of General Medicine (Mar 2021)
The Moderate Correlation Between 25(OH)D Serum and Saliva in Healthy People with Low Vitamin D Intake
Abstract
Dina Keumala Sari,1 Liza Meutia Sari,2 Lidya Imelda Laksmi,3 Farhat4 1Nutrition Department, Faculty of Medicine, Universitas Sumatera Utara, Medan, Indonesia; 2Oral Medicine Department, Faculty of Dentistry, Universitas Syah Kuala, Banda Aceh, Indonesia; 3Anatomy Pathology Department, Faculty of Medicine, Universitas Sumatera Utara, Medan, Indonesia; 4Ear, Nose, Throat, Head and Neck Department, Faculty of Medicine, Universitas Sumatera Utara, Medan, IndonesiaCorrespondence: Dina Keumala SariNutrition Department, Faculty of Medicine, Universitas Sumatera Utara, Jl. Ring Road, Komp. Tasbih 2, Blok 5, No. 126, Medan, North Sumatra, 20128, IndonesiaTel +62 81397177693Email [email protected]: The routine examination of vitamin D levels is carried out by checking serum 25(OH)D levels, while serum 1.25(OH)D levels are less frequently utilized. The proposition that testing for salivary vitamin D can show a correlation with serum levels in healthy people is questionable, especially with low vitamin D intake. This study aimed to find the correlation between vitamin D levels, which were assessed as 25(OH)D and 1.25(OH)D in saliva, and serum 25(OH)D and 1.25(OH)D levels in people with low vitamin D intake.Patients and Methods: This study is a cross-sectional study involving healthy men and women, aged 18– 60 years, carried out from August to November, 2020, in North Sumatra Province, Indonesia. The parameters studied were the 25(OH)D and 1.25(OH)D levels in saliva and serum, and vitamin D intake. The statistical analysis used was the Spearman correlation test, performed to determine the correlation between each parameter.Results: This study involved 56 study subjects, who were rural adults (male or female) with a 78.6% deficiency in 25(OH)D found by examining saliva, and a 76.8% deficiency found by examining the serum. All of the subjects were categorized as having low vitamin D intake (less than 15 micrograms per day). The analysis showed a moderate correlation between levels of saliva 25(OH)D and serum 25(OH)D (p = 0.424), and a weak correlation between levels of saliva 1.25(OH)D and serum 25(OH)D (p = 0.339).Conclusion: In people with low vitamin D intake, there was a moderate correlation between serum 25(OH)D and saliva, but a weak correlation was found in the 1.25(OH)D assay. The use of saliva 25(OH)D levels to detect 25(OH)D in the circulation is a possible non-invasive alternative to serum testing.Keywords: cross-sectional study, deficiency, food sources, non-invasive, rural, vitamin D
