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. 2019 Feb 15;29(1):010706. doi: 10.11613/BM.2019.010706

Table 2. Stability results for 12 different saliva analytes obtained after measuring samples at different processing time and under different storage conditions.

Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
58,570 (47,055 – 101,200) 71,340 (48,460 – 94,915) 74,920 (44,770 – 92,445) 79,850 (48,175 -100,690) - - - - -
RT Variation (%) 1.9 24.1 30.4 38.9 - - - - -
P > 0.999 > 0.999 > 0.999 > 0.999 - - - - -
78,810 (48,060 – 102,305) 68,670 (41,470 – 90,655) 76,480 (39,935 – 95,885) 79,970 (47,300 – 101,295) 76,540 (47,395 – 99,160) 81,000 (48,325 – 100,705) - - -
4 ºC Variation (%) 37.1 19.5 33.1 39.2 33.2 40.9 - - -
P 0.494 > 0.999 > 0.999 0.769 > 0.999 > 0.999 - - -
AMY (U/L) 57,470
(39,615 – 101,310)
- - - - - 79,870 (47,165 – 100,730) 68,840 (40,750 – 89,215) 74,160 (42,280 – 97,095) 77,610 (47,965 – 99,245)
- 20 ºC Variation (%) - - - - - 39.0 19.8 29.0 35.0
P - - - - - > 0.999 0.054 > 0.999 > 0.999
- - - - - 79,300 (47,730 – 100,625) 68,140 (39,715 – 87,200) 71,250 (42,175 – 89,315) 77,460 (49,580 – 104,120)
- 80 ºC Variation (%) - - - - - 38.0 18.6 24.0 34.8
P - - - - - > 0.999 0.156 0.248 > 0.999
7.4 (3.7 -10.3) 5.5 (0.1 – 7.7 5.3 (2.6 - 11.1) 5.3 (3.6 – 11.9) - - - - -
RT Variation (%) 2.8 23.6 26.4 26.4 - - - - -
P > 0.999 > 0.999 > 0.999 > 0.999 - - - - -
7.2 (3.6 -10.3) 6.6 (3.2 – 8.8) 11.2 (7.8 – 14.5) 7.1 (4.0 – 10.7) 11.4 (9.3 – 14.7) 7.4 (6-6 – 10.3) - - -
4 ºC Variation (%) 0.0 8.3 55.6 1.4 58.3 2.8 - - -
P > 0.999 > 0.999 0.223 > 0.999 0.097 > 0.999 - - -
CHE (µM/mL/min) 7.2
(2.6 - 9.5)
- - - - - 4.9 (3.1 – 8.3) 6.7 (4.2 – 8.0) 5.9 (4.2 – 7.2) 4.0 (0.6 – 4.8)
- 20 ºC Variation (%) - - - - - 31.9 6.9 18.1 44.4
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
- - - - - 7.2 (6.1 – 11.3) 8.1 (5.8 – 11.0) 6.9 (4.9 – 10.1) 4.5 (3.8 – 7.3)
- 80 ºC Variation (%) - - - - - 0.0 12.5 4.2 37.5
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
10.6 (4.5 – 25.5) 11.6 (4.3 – 15.9) 4.4 (3.6 – 8.2) 4.1 (3.6 -4.7) - - - - -
RT Variation (%) 20.9 13.4 67.2 69.4 - - - - -
P > 0.999 > 0.999 < 0.001 < 0.001 - - - - -
14.3 (5.1 -23.3) 15.7 (3.7 - 22.1) 6.3 (2.4 – 16) 2.1 (0.4 - 3.3) 1.7 (1.4 - 4.1) 0.6 (0.5 - 3.9) - - -
4 ºC Variation (%) 6.7 17.2 53.0 84.3 87.3 95.5 - - -
P > 0.999 > 0.999 < 0.001 < 0.001 <0.001 < 0.001 - - -
Lip (U/L) 13.4
(7.3 - 33.2)
- - - - - 3.8 (0.9 – 8.0) 2.0 (1.4 – 14.0) 2.0 (1.2 - 3.5) 3.5 (2.4 - 10.6)
- 20 ºC Variation (%) - - - - - 71.6 85.1 85.1 73.9
P - - - - - 0.018 0.017 < 0.001 0.031
- - - - - 12.5 (3.5 - 32.4) 9.9 (2.7 - 36.4) 11.6 (4.1 - 34.7) 12.9 (4.5 - 54.4)
- 80 ºC Variation (%) - - - - - 6.7 26.1 13.4 3.7
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
20.1 (14.4 -48.8) 15.7 (12.4 - 39.1) 27.7 (23.8 - 32.4) 18.1 (16.4 - 25.4) - - - - -
RT Variation (%) 9.9 29.3 24.5 18.6 - - - - -
P > 0.999 0.002 > 0.999 0.035 - - - - -
19.7 (15.7 - 51.3) 16.4 (13.3 - 42.4) 28.8 (25.4 - 57.4) 14.8 (12.2 - 27.2) 26.5 (20.4 -42.6) 23.2 (18.4 - 34.2) - - -
4 ºC Variation (%) 11.5 26.5 29.2 33.7 18.9 4.3 - - -
P > 0.999 0.041 > 0.999 < 0.001 > 0.999 > 0.999 - - -
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
TEA (U/L) 22.3
(15.6 - 59.4)
- - - - - 19.9 (15.6 - 49.7) 24.4 (17 - 56.9) 16.8 (9.9 -35.4) 21.5 (13.9 -43.4)
- 20 ºC Variation (%) - - - - - 10.3 9.7 24.5 3.4
P - - - - - > 0.999 > 0.999 < 0.001 0.315
- - - - - 20.5 (15.4 - 50.9) 24.3 (17.8 - 56.7) 13.6 (9.0 -34.2) 21.0 (15.6 -53)
- 80 ºC Variation (%) - - - - - 8.1 9.0 38.9 5.6
P - - - - - > 0.999 > 0.999 < 0.001 > 0.999
9.1 (3.6 - 21.6) 10.0 (3.8 - 20.4) 5.5 (1.5 - 9.8) 6.0 (2.4 - 11.2) - - - - -
RT Variation (%) 45.5 40.1 67.2 63.9 - - - - -
P > 0.999 0.248 0.002 0.003 - - - - -
11.7 (5.8 - 21.4) 11.5 (6.6 - 16.5) 10.9 (4.7 - 18.0) 5.7 (2.7 - 10.1) 4.4 (0.9 - 7.8) 2.0 ((- 1.0) -7.9) - - -
4 ºC Variation (%) 29.8 30.7 34.6 66.0 70.8 88.0 - - -
P > 0.999 > 0.999 > 0.999 0.006 <0.001 < 0.001 - - -
CK (U/L) 16.6
(7.00 - 33.2)
- - - - - 7.0 (3.4 - 10.8) 5.9 (4.7 -10.2) 7.2 (5.7 - 11.5) 6.9 (4.0 - 8.5)
- 20 ºC Variation (%) - - - - - 57.8 64.8 56.6 58.4
P - - - - - 0.003 0.043 0.045 0.020
- - - - - 12.9 (6.7 - 22.4) 13.6 (8.7 - 20.7) 15.9 (8.1 - 20.5) 13.6 (10.1 - 20.1)
- 80 ºC Variation (%) - - - - - 22.6 18.1 4.2 18.4
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
11.2 (9.0 - 25.5) 11.5 (10.2 - 24.0) 15.3 (12.4 - 24.7) 22.2 (15.3 - 32.5) - - - - -
RT Variation (%) 7.1 4.6 27.0 83.8 - - - - -
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
P > 0.999 > 0.999 > 0.999 > 0.999 - - - - -
11.7 (9.5 - 25.2) 12.7 (10.5 - 24.4) 12.8 (10.3 - 23.6) 10.3 (8.3 - 24.1) 10.7 (8.4 - 29.3) 10.3 (8.2 - 24.7) - - -
4 ºC Variation (%) 3.3 5.0 6.2 14.5 11.2 14.9 - - -
P > 0.999 > 0.999 > 0.999 0.760 0.508 0.222 - - -
AST (U/L) 12.1
(10.1 - 26.7)
- - - - - 9.7 (7.7 - 17.2) 9.1 (5.9 - 11.3) 7.9 (6.1 - 11.5) 5.2 (2.8 - 6.0)
- 20 ºC Variation (%) - - - - - 19.5 24.9 34.4 57.3
P - - - - - 0.028 < 0.001 < 0.001 < 0.001
- - - - - 12.8 (11.0 - 25.1) 13.1 (11.1 - 26.1) 13.5 (11.4 - 26.1) 13.9 (9.7 - 25.0)
- 80 ºC Variation (%) - - - - - 6.2 8.3 12.0 15.4
P - - - - - > 0.999 > 0.999 > 0.999 0.666
338 (214 -409) 339 (212 – 399) 276 (189 – 344) 204 (139 – 295) - - - - -
RT Variation (%) 0.3 0.6 18.1 39.3 - - - - -
P > 0.999 > 0.999 0.365 0.006 - - - - -
333 (224- 402) 336 (193 – 404) 320 (211 – 383) 220 (172 – 338) 196 (156 – 302) 131 (77 – 261) - - -
4 ºC Variation (%) 1.0 0.1 5.0 34.8 41.7 61.1 - - -
P > 0.999 > 0.999 > 0.999 0.222 0.006 < 0.001 - - -
LD (U/L) 337
(221-403)
- - - - - 69 (27 – 168) 54 (18 – 97) 27 (5 – 59) 31 (15 – 59)
- 20 ºC Variation (%) - - - - - 79.5 84.0 92.1 90.9
P - - - - - < 0.001 < 0.001 < 0.001 < 0.001
- - - - - 323 (214 – 391) 321 (223 – 399) 335 (234 – 414) 370 (279 – 445)
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
- 80 ºC Variation (%) - - - - - 4.0 1.8 0.6 10.0
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
0.5 (0.4 - 1.3) 0.5 (0.4 - 1.3) 0.3 (0.1 - 1.2) 0.01((- 0.003) -0.04) - - - - -
RT Variation (%) 1.0 1.0 58.2 98.1 - - - - -
P > 0.999 > 0.999 0.634 0.003 - - - - -
0.5 (0.4 - 1.2) 0.5 (0.4 - 1.2) 0.4 (0.3 -1.3) 0.4 (0.3 - 1.4) 0.5 (0.4 -1.5) 0.5 (0.1 - 0.7) - - -
4 ºC Variation (%) 1.9 1.0 15.5 17.5 8.7 9.7 - - -
P > 0.999 > 0.999 > 0.999 > 0.999 >0.999 > 0.999 - - -
Lact
(mmol/L)
0.5
(0.4 - 1.2)
- - - - - 0.5 (0.4 - 1.2) 0.5 (0.4 - 1.1) 0.5 (0.4 - 1.2) 0.5 (0.4 - 1.2)
- 20 ºC Variation (%) - - - - - 1.0 10.7 5.8 3.9
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
- - - - - 0.5 (0.4 - 1.2) 0.5 (0.4 - 1.2) 0.5 (0.4 - 1.2) 0.5 (0.4 -1.2)
- 80 ºC Variation (%) - - - - - 1.0 6.8 1.9 3.9
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
1.2 (0.8 - 1.7) 1.3 (1.0 - 1.9) 2.0 (1.2 -2.2) 1.1 (0.9 - 1.8) - - - - -
RT Variation (%) 18.2 35.4 101 6.1 - - - - -
P > 0.999 0.059 0.007 > 0.999 - - - - -
1.1 (0.9 - 1.6) 1.2 (0.8 - 1.8) 1.0 (0.8 - 1.9) 0.9 (0.6 - 1.7) 0.8 (0.6 -1.2) 0.6 (0.5 - 1.2) - - -
4 ºC Variation (%) 12.1 21.2 4.0 6.1 20.2 37.4 - - -
P > 0.999 0.734 > 0.999 > 0.999 >0.999 > 0.999 - - -
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
ADA
(U/L)
1.0
(0.7 - 1.6)
- - - - - 1.0 (0.5 - 1.7) 0.8 (0.3 - 1.3) 0.5 (0.2 - 1.1) 0.6 (0.2 - 0.8)
- 20 ºC Variation (%) - - - - - 2.0 15.2 45.5 41.4
P - - - - - > 0.999 > 0.999 0.189 0.064
- - - - - 1.2 (0.8 - 1.8) 1.2 (0.8 - 1.8) 1.0 (0.7 - 1.5) 1.2 (1.0 - 2.0)
- 80 ºC Variation (%) - - - - - 17.2 16.2 2.0 18.2
P - - - - - > 0.999 > 0.999 > 0.999 0.291
0.2 (0.2 - 0.3) 0.2 (0.2 - 0.3) 0.1 (0.1 - 0.2) 0.2 (0.1 - 0.2) - - - - -
RT Variation (%) 31.6 26.2 13.9 9.1 - - - - -
P 0.701 0.529 0.582 0.582 - - - - -
0.2 (0.2 - 0.3) 0.2 (0.2 - 0.3) 0.2 (0.1 - 0.2) 0.2 (0.1 - 0.2) 0.2 (0.2 -0.3) 0.2 (0.1 - 0.2) - - -
4 ºC Variation (%) 29.5 24.1 4.6 7.4 17.1 10.5 - - -
P > 0.999 > 0.999 > 0.999 > 0.999 0.064 > 0.999 - - -
TEAC
(mM)
0.2
(0.1 – 0.2)
- - - - - - 0.2 (0.1 - 0.2) 0.2 (0.1 - 0.2) 0.2 (0.1 - 0.3)
- 20 ºC Variation (%) - - - - - - 6.0 6.8 33.8
P - - - - - - > 0.999 > 0.999 0.457
- - - - - - 0.2 (0.1 - 0.2) 0.2 (0.1 - 0.3) 0.2 (0.2 - 0.3)
- 80 ºC Variation (%) - - - - - - 8.3 11.0 32.0
P - - - - - - > 0.999 0.291 0.841
0.4 (0.3 - 0.5) 0.4 (0.3 - 0.5) 0.4 (0.3 - 0.5) 0.3 (0.2 - 0.3) - - - - -
RT Variation (%) 3.3 9.1 9.5 13.3 - - - - -
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
P > 0.999 0.669 > 0.999 < 0.001 - - - - -
0.4 (0.2 - 0.5) 0.3 (0.2 - 0.5) 0.4 (0.3 - 0.5) 0.3 (0.3 - 0.4) 0.3 (0.2 -0.4) 0.4 (0.3 - 0.4) - - -
4 ºC Variation (%) 3.0 1.3 2.0 4.5 9.4 4.3 - - -
P > 0.999 > 0.999 > 0.999 0.555 0.018 0.047 - - -
FRAS
(mM)
0.3
(0.3 - 0.5)
- - - - - 0.3 (0.3 - 0.5) 0.4 (0.3 - 0.5) 0.3 (0.3 - 0.5) 0.3 (0.3 - 0.5)
- 20 ºC Variation (%) - - - - - 0.1 10.4 4.8 0.3
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
- - - - - 0.3 (0.2 - 0.5) 0.3 (0.2 - 0.5) 0.3 (0.2 - 0.5) 0.3 (0.2 - 0.5)
- 80 ºC Variation (%) - - - - - 0.1 0.6 1.3 2.1
P - - - - - > 0.999 > 0.999 > 0.999 0.394
0.2 (0.2 - 0.2) 0.2 (0.1 - 0.2) 0.2 (0.1 - 0.2) 0.2 (0.1 - 0.2) - - - - -
RT Variation (%) 1.1 1.5 0.1 27.2 - - - - -
P > 0.999 > 0.999 0.010 < 0.001 - - - - -
0.2 (0.2 - 0.2) 0.2 (0.1 - 0.2) 0.2 (0.1 - 0.2) 0.2 (0.1 - 0.2) 0.2 (0.1 -0.2) 0.2 (0.1 - 0.2) - - -
4 ºC Variation (%) 0.8 0.1 5.9 12.7 14.3 10.1 - - -
P > 0.999 0.794 0.002 < 0.001 <0.001 < 0.001 - - -
CUPRAC (mM) 0.2
(0.2 - 0.3)
- - - - - 0.2 (0.2 - 0.2) 0.2 (0.2 - 0.2) 0.2 (0.2 - 0.2) 0.2 (0.2 - 0.3)
- 20 ºC Variation (%) - - - - - 1.2 0.3 3.3 2.1
P - - - - - > 0.999 > 0.999 0.162 > 0.999
- - - - - 0.2 (0.2 - 0.2) 0.2 (0.2 - 0.3) 0.2 (0.2 - 0.2) 0.2 (0.2 - 0.3)
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
- 80 ºC Variation (%) - - - - - 0.1 3.7 0.2 2.4
P - - - - - > 0.999 > 0.999 0.131 > 0.999
13.1 (9.5 - 16.7) 13.7 (9.5 - 16.7) 11.9 (7.7 - 16.1) 9.5 (5.9 - 12.5) - - - - -
RT Variation (%) 2.6 1.3 12.2 28.6 - - - - -
P > 0.999 > 0.999 0.084 < 0.001 - - - - -
13.7 (9.5 - 17.3) 13.1 (9.5 - 17.3) 13.1 (8.9 - 16.7) 12.5 (8.3 - 16.1) 11.9 7.7 - 14.3) 10.7 (7.1 - 13.7) - - -
4 ºC Variation (%) 1.7 1.5 4.6 10.2 12.1 20.6 - - -
P > 0.999 > 0.999 > 0.999 0.383 0.014 0.002 - - -
Uric acid (µmol/L) 13.7
(9.5 - 16.1)
- - - - - 13.7 (9.5 - 18.4) 13.7 (9.5 - 16.7) 14.3 (9.5 - 17.3) 14.3 (10.1 - 17.8)
- 20 ºC Variation (%) - - - - - 1.5 2.4 2.8 5.6
P - - - - - > 0.999 > 0.999 > 0.999 0.365
- - - - - 13.7 (9.5 - 16.7) 13.1 (9.5 - 16.7) 13.7 (9.5 - 17.3) 14.3 (9.5 - 16.7)
- 80 ºC Variation (%) - - - - - 0.2 2.8 0.0 2.8
P - - - - - > 0.999 > 0.999 > 0.999 0.666
0.2 (0.2 - 0.3) 0.2 (0.2 - 0.3) 0.2 (0.2 - 0.4) 0.4 (0.2 - 0.5) - - - - -
RT Variation (%) 2.2 13.3 12.5 50.0 - - - - -
P > 0.999 0.960 > 0.999 > 0.999 - - - - -
0.2 (0.2 - 0.3) 0.2 (0.2 - 0.3) 0.3 (0.2 - 0.3) 0.2 (0.2 - 0.3) 0.3 (0.2 - 0.4) 0.2 (0.2 - 0.4) - - -
4 ºC Variation (%) 8.9 1.2 2.0 6.5 33.5 0.4 - - -
P > 0.999 > 0.999 > 0.999 > 0.999 >0.999 > 0.999 - - -
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
CAT (units/mL) 0.2
(0.2 – 0.3)
- - - - - 0.2 (0.2 - 0.3) 0.3 (0.2 - 0.4) 0.3 (0.2 - 0.4) 0.3 (0.2 - 0.4)
- 20 ºC Variation (%) - - - - - 8.1 14.1 19.4 26.2
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
- - - - - 0.3 (0.2 - 0.3) 0.3 (0.2 - 0.4) 0.2 (0.2 - 0.4) 0.2 (0.2 - 0.4)
- 80 ºC Variation (%) - - - - - 4.0 11.3 2.4 4.8
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
103 (80 – 169) 106 (83 – 168) 121 (79 – 147) 59 (41 – 69) - - - - -
RT Variation (%) 6.7 3.7 9.8 46.9 - - - - -
P > 0.999 > 0.999 > 0.999 0.001 - - - - -
116 (81 – 169) 119 (89 – 165) 115 (67 – 142) 102 (60 – 126) 109 (56 – 173) 95 (69 – 123) - - -
4 ºC Variation (%) 4.6 8.1 4. 8.1 1.2 14.2 - - -
P > 0.999 > 0.999 0.914 0.331 >0.999 > 0.999 - - -
AOPP
(μM)
111
(76 -180)
- - - - - 109 (97 – 184) 115 (100 – 186) 102 (81 – 155) 96 (82 – 146)
- 20 ºC Variation (%) - - - - - 1.9 4.1 7.3 13.3
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
- - - - - 114 (90 – 185) 116 (98 – 182) 110 (84 – 171) 124 (83 – 207)
- 80 ºC Variation (%) - - - - - 2.9 4.7 0.5 11.8
P - - - - - > 0.999 > 0.999 > 0.999 > 0.999
5.4 (2.1 - 6.6) 6.8 (3.2 -10.6) 5.6 (4.3 -10.8) 4.4 (2.2 - 7.2) - - - - -
RT Variation (%) 120.4 178.8 127.3 80.8 - - - - -
Analyte
(unit)
T0 Temperature T1 T2 T3 T4 T5 T6 T7 T8 T9
P > 0.999 0.011 0.001 > 0.999 - - - - -
5.3 (2.4 - 6.4) 7.3 (3.1 -10.2) 8.6 (5.7 -12.2) 6.1 (3.2 - 7.6) 4.2 (3.5 -7.2) 4.5 (2.5 - 8.0) - - -
4 ºC Variation (%) 117.1 198 252.2 146.9 72.2 84.5 - - -
P > 0.999 0.012 < 0.001 0.960 >0.999 > 0.999 - - -
H2O2
(μM)
2.5
(1.7 - 8.9)
- - - - - 6.8 (2.1 - 9.4) 7.5 (3.1 - 9.0) 9.2 (4.1 -11.8) 7.7 (3.8 -10.8)
- 20 ºC Variation (%) - - - - - 176.3 206.9 274.7 212.2
P - - - - - > 0.999 0.248 < 0.001 0.002
- - - - - 6.2 (2.5 -10.8) 6.6 (2.8 - 9.0) 7.2 (3.3 -12.4) 9.6 (3.0 -12.2)
- 80 ºC Variation (%) - - - - - 153.5 169.8 193.9 291.0
P - - - - - 0.804 > 0.999 < 0.001 0.002
Quantitative data is presented as median and interquartile range. T0 - baseline. T1 - 3 hours. T2 - 6 hours. T3 - 24 hours.T4 - 72 hours T5 - 7 days. T6 - 14 days. T7 – 1 month . T8 – 3 months . T9 – 6months. RT - room temperature. AMY - α-amylase. CHE - cholinesterase. Lip - lipase. TEA - total esterase. CK - creatine kinase. AST - aspartate aminotransferase. LD - lactate dehydrogenase. Lact - lactate. ADA - adenosine deaminase. TEAC - Trolox equivalent antioxidant capacity. FRAS - ferric reducing ability. CUPRAC - cupric reducing antioxidant capacity. CAT - catalase. AOPP - advanced oxidation protein products. H2O2 - hydrogen peroxide. P < 0.05 represents statistical significant difference.