E-ISSN: 2148-4570 • ISSN:2148-4570
The Change of the Vitamin D Test Request Number after the Regulation by the Ministry of Health [Ankara Med J]
Ankara Med J. 2023; 23(2): 165-175 | DOI: 10.5505/amj.2023.45712

The Change of the Vitamin D Test Request Number after the Regulation by the Ministry of Health

Mustafa Mahir Ulgu1, Naim Ata1, Derun Taner Ertugrul2, Murat Çağlayan3, Mustafa Okan Ayvali1, Osman Celik1, Suayip Birinci4, Muhammed Kizilgul5
1Turkish Ministry of Health, General Directorate of Health Information System
2Ataturk Chest Diseases and Chest Surgery Teaching and Training Hospital, Department of Endocrinology and Metabolism
3Ankara Etlik City Hospital, Department of Medical Biochemistry
4Turkish Ministry of Health, Deputy Minister of Health
5Ankara Etlik City Hospital, Department of Endocrinology and Metabolism

INTRODUCTION: There has been an increase in 25-hydroxy vitamin D (25(OH)D) test requests and laboratory costs in recent years. At the end of 2019, the General Directorate of Health Information Systems issued a regulation calling for restricting vitamin D requests in primary care. We aimed to investigate the effect of this regulation on the requested numbers of 25(OH)D tests with the big data obtained from the national information health system of the Turkish Ministry of Health.
METHODS: Between 2016-2022, all inpatient and outpatient tests and 25(OH)D tests in all medical biochemistry laboratories in Turkey were determined based on department and institution type. Distribution among health institutions and test request rates were calculated.
RESULTS: The total number of 25(OH)D tests requested was increased from 2016 to 2022, except for 2020 and 2021, probably related to the COVID-19 pandemic. The yearly increase rate in 2017, 2018, 2019, and 2022 was 137%, 56%, 16%, and 5%, respectively. The number of 25(OH)D tests requested in primary care institutions decreased after the regulation. The total number of 25(OH)D tests requested in 2nd and 3rd Stage Public Health Facilities and private hospitals increased in 2022 compared to 2019.
DISCUSSION AND CONCLUSION: Our findings showed that the request for 25(OH)D testing decreased in primary care and increased in 2nd and 3rd Stage Public Health Facilities and private hospitals after the regulation was released. Despite the decrease in the yearly increase rate in the number of test requests, the annual number of tests requested is still high, suggesting that different measures should be taken.

Keywords: 25-hydroxyvitamin D, medical biochemistry laboratory, big data, laboratory tests, national health data, ministry of health.

Mustafa Mahir Ulgu, Naim Ata, Derun Taner Ertugrul, Murat Çağlayan, Mustafa Okan Ayvali, Osman Celik, Suayip Birinci, Muhammed Kizilgul. The Change of the Vitamin D Test Request Number after the Regulation by the Ministry of Health. Ankara Med J. 2023; 23(2): 165-175

Corresponding Author: Muhammed Kizilgul, Türkiye
Manuscript Language: English
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