Journal of Laboratory Medicine and Quality Assurance

Indexed in /covered by CAS, KoreaScience & DOI/Crossref:eISSN 2288-7261   pISSN 2384-2458

Table. 3.

Table. 3.

HE4 concentration after storage under three different conditions (4°C, 20°C, and -4°C) on days 1, 3, 14, 30, and 90

LevelStorage conditionCategoryHE4 stability test

Day 1 (n=3)Day 3 (n=3)Day 7 (n=3)Day 14 (n=3)Day 30 (n=3)Day 90 (n=3)
I-20°CMean (pmol/L)39.9139.8939.3640.6140.9938.59
P-value-1.0000.57990.38540.09550.0347
CV (%)0.870.580.140.421.022.89
4°CMean (pmol/L)39.9938.8935.7633.6427.4616.68
P-value0.9930.0079<0.0001<0.0001<0.0001<0.0001
CV (%)1.191.000.960.600.551.37
20°CMean (pmol/L)37.8432.7724.8319.3015.8418.64
P-value0.0285<0.0001<0.0001<0.0001<0.0001<0.0001
CV (%)0.630.310.240.427.169.10
II-20°CMean (pmol/L)76.2275.9074.7876.8676.9074.35
P-value-0.96630.08740.69280.64240.0230
CV (%)1.150.450.480.291.590.71
4°CMean (pmol/L)75.6673.8068.0263.9552.9232.05
P-value0.84540.0051<0.0001<0.0001<0.0001<0.0001
CV (%)1.820.570.601.100.530.77
20°CMean (pmol/L)74.2262.1346.3836.6228.9533.32
P-value0.2400<0.0001<0.0001<0.0001<0.0001<0.0001
CV (%)3.741.240.440.881.175.35
III-20°CMean (pmol/L)338.63339.27338.83344.93350.13335.17
P-value1.0000.9991.0000.24100.01210.7539
CV (%)1.530.260.590.330.711.82
4°CMean (pmol/L)337.17330.80307.13296.10250.37176.23
P-value0.93560.0063<0.0001<0.0001<0.0001<0.0001
CV (%)0.790.210.350.440.560.57
20°CMean (pmol/L)328.13288.33228.70188.43159.70172.87
P-value0.0333<0.0001<0.0001<0.0001<0.0001<0.0001
CV (%)1.290.281.292.122.673.17

Significant results with P-values less than 0.05 when compared with baseline values (1 day after freezing) are expressed in red color (derived using Dunnett’s test).

Abbreviations: HE4, human epididymis protein 4; CV, coefficient of variation.

J Lab Med Qual Assur 2019;41:153-60 https://doi.org/10.15263/jlmqa.2019.41.3.153
© 2019 J Lab Med Qual Assur