Serum Analysis in Patients with Temporomandibular Disorders: A Controlled Cross-Sectional Study in Norway

Table 3

Elevated and lowered values: observed number and percent of patients and controls with elevated and lowered values of the different determinants from the serum analyses. Mild to moderate vitamin D level deficiency was seen in 11 TMD patients compared to 18 controls. Furthermore, we observed marginally elevated levels of CRP (n = 7) and elevated levels of transferrin receptor (n = 7) and homocysteine (n = 6), as well as lowered levels of erythrocyte volume fraction (EVF) (n = 5), in the TMD group. FT4 was elevated in 3 patients and lowered in one patient, while parathyroid hormone (PTH) was elevated in 2 patients and lowered in 4 patients.

Elevated and lowered values	TMD				Control
	Elevated		Lowered		Elevated		Lowered
	n	%	n	%	n	%	n	%
Hemoglobin	1	1.7	2	3.3	0	0.0	1	1.7
EVF	1	1.7	5	8.3	0	0.0	0	0.0
MCV	1	1.7	3	5.0	4	6.7	0	0.0
Homocysteine	6	10.0	0	0.0	3	5.0	0	0.0
Transferrin R	7	11.7	3	5.0	3	5.0	2	3.3
TSH	0	0.0	2	3.3	1	1.7	1	1.7
FT4	3	5.0	1	1.7	1	1.7	0	0.0
Cobalamin	5	8.3	1	1.7	1	1.7	1	1.7
Folate	0	0.0	2	3.3	0	0.0	1	1.7
CRP	7	11.7	0	0.0	4	6.7	0	0.0
Creatinine	0	0.0	0	0.0	1	1.7	0	0.0
Estimated GFR	0	0.0	0	0.0	0	0.0	0	0.0
Sodium	0	0.0	0	0.0	0	0.0	1	1.7
Potassium	0	0.0	1	1.7	1	1.7	1	1.7
Calcium	1	1.7	0	0.0	3	5.0	1	1.7
GT	2	3.3	5	8.3	0	0.0	7	11.7
Albumin	9	15.0	0	0.0	0	0.0	0	0.0
PTH	2	3.3	4	6.7	0	0.0	1	1.7
Vitamin D	3	5.0	11	18.3	1	1.7	18	30.0