Laboratory Medicine and Quality Assurance

Table. 7.

Distribution of analytical methods (principle) used and coefficients of variation (%) according to the principle of general chemistry in 2019

Test/method Trials
1st 2nd 3rd 4th
Lab* CC-19-01 CC-19-02 CC-19-03 Lab CC-19-04 CC-19-05 CC-19-06 Lab CC-19-07 CC-19-08 CC-19-09 Lab CC-19-10 CC-19-11 CC-19-12
Alanine aminotransferase 1,685 6.5 6.0 7.1 1,707 5.5 7.2 5.7 1,724 5.4 6.9 5.6 1,742 5.6 7.0 5.8
Dry chemistry 9 16.7 3.6 18.7 9 3.4 16.9 5.0 9 0.9 1.6 3.6 8 2.1 5.2 2.2
LDH with P5P 15 15.2 3.6 14.9 15 5.3 12.7 3.5 20 12.5 10.6 13.9 21 13.7 17.0 13.2
LDH without P5P 1,631 6.4 5.9 7.1 1,647 5.4 7.0 5.4 1,666 5.4 5.9 5.6 1,686 5.6 6.9 5.4
Other method 30 9.4 8.1 8.8 36 8.8 10.8 10.2 29 8.2 10.3 7.7 27 5.7 8.7 7.3
Albumin 1,558 4.8 5.4 5.1 1,581 5.5 4.9 5.4 1,590 5.3 5.2 5.5 1,609 5.3 5.2 5.4
Dye binding-BCG 1,526 4.8 5.4 5.1 1,544 5.1 5.0 5.4 1,562 5.3 5.1 5.4 1,580 5.3 5.2 5.4
Dye binding-BCP 8 5.3 6.6 6.9 9 5.6 5.4 5.7 7 6.1 2.3 2.2 8 4.0 4.2 4.1
Other method 24 3.6 3.1 3.9 28 3.2 2.0 2.9 21 6.2 4.1 5.3 21 5.5 4.0 3.2
Alkaline phosphatase 1,485 43.5 35.8 43.3 1,507 36.3 45.5 38.1 1,511 35.7 42.5 34.6 1,533 34.4 42.6 35.8
Other method 22 35.6 31.3 36.6 26 22.2 38.9 16.6 20 30.7 39.3 29.2 20 11.0 39.6 26.4
PNPP, AMP buffer 869 13.5 16.2 13.4 874 16.3 14.7 16.9 882 16.5 14.1 16.2 892 16.8 14.1 16.9
PNPP, DEA buffer 159 11.4 10.5 9.3 165 9.1 9.1 9.0 167 9.6 9.3 8.5 168 8.2 9.4 8.8
PNPP, EAE buffer 435 5.8 4.8 5.8 442 4.3 6.2 5.1 442 4.6 5.8 4.5 453 4.2 5.7 4.1
Amylase 820 12.6 18.4 12.5 821 17.5 12.8 18.0 828 18.6 12.4 18.7 841 18.2 12.4 18.3
Dry chemistry 9 7.2 3.8 7.8 8 2.9 6.1 2.8 8 2.8 8.4 2.3 8 2.8 7.0 2.6
Hydrolysis of 2-chloro-4-nitrophenyl-azido-deoxy-maltopentaoside 5 1.0 0.3 0.9 4 1.5 2.8 3.0 4 2.0 0.9 1.2 3 0.9 0.6 0.7
Hydrolysis of 2-chloro-4-nitrophenyl-galactopyranosylmaltoside 108 2.1 1.6 2.0 110 1.5 2.0 1.6 119 1.5 1.7 1.4 123 1.0 1.7 1.3
Hydrolysis of 2-chloro-4-nitrophenyl-α-D-maltotrioside 215 5.3 2.7 4.7 222 2.6 3.0 2.7 218 3.2 3.0 2.4 221 2.4 3.1 3.2
Hydrolysis of 4,6-ethylidene-4-nitrophenyl-maltoheptaose 348 4.0 4.7 4.0 346 4.7 4.0 4.9 357 4.5 3.9 4.6 364 4.5 5.3 4.6
Hydrolysis of 4-nitrophenylbenzyl-α-maltopentaose 125 12.1 19.3 12.0 121 19.5 12.3 19.6 116 20.6 10.3 20.7 117 19.9 11.5 19.8
Other method 10 15.6 20.0 15.4 10 11.9 11.4 11.6 6 17.5 11.0 18.5 5 20.6 10.8 18.2
Aspartate aminotransferase 1,685 5.5 4.1 5.2 1,706 4.3 5.3 4.3 1,723 4.2 5.8 4.2 1,741 4.6 5.0 4.6
Dry chemistry 9 2.7 1.9 3.0 9 2.3 8.4 3.5 9 1.5 1.1 3.2 8 1.7 3.9 3.2
MDH with P5P 15 8.2 2.7 7.6 15 5.9 6.3 5.7 15 4.4 4.8 2.9 16 4.5 2.8 3.4
MDH without P5P 1,631 5.0 4.1 5.2 1,646 4.3 5.2 4.3 1,671 4.4 5.7 4.2 1,690 4.5 5.0 4.6
Other method 30 7.3 4.3 7.5 36 5.7 7.5 6.9 28 4.9 8.2 5.9 27 5.2 6.5 4.8
Bilirubin, direct 814 20.1 16.3 20.5 815 17.4 17.3 17.1 815 11.4 18.0 15.1 823 15.5 18.7 17.2
Copper ion oxidation 50 3.4 12.4 0.0 50 14.5 13.2 14.3 50 13.8 13.8 15.5 48 13.2 15.6 14.2
Diazonium salt with blank 329 22.4 5.1 23.2 327 5.1 18.8 3.8 333 6.3 18.2 4.6 335 4.7 21.7 5.3
Diazo-sulfanilic acid with blank 44 40.5 35.0 36.4 46 27.7 34.1 27.1 46 31.1 38.1 31.6 46 25.7 36.8 24.1
Diazo-sulfanilic acid without blank 17 39.2 26.3 17.8 17 23.7 35.5 19.6 19 15.9 34.6 16.4 20 20.2 28.4 20.2
Enzymatic oxidation 6 20.2 16.2 19.4 6 16.4 16.0 17.3 5 5.3 6.4 7.1 5 5.6 3.4 6.3
Other method 16 33.9 30.3 22.6 17 18.9 27.9 27.4 10 28.4 20.3 21.4 10 18.7 29.8 18.2
Vanadate oxidation 352 11.4 12.8 10.3 352 9.7 2.6 10.8 352 11.6 6.5 13.0 359 12.9 13.3 13.5
Bilirubin, total 1,562 10.1 6.6 10.4 1,585 6.3 10.3 6.2 1,595 5.7 10.6 6.3 1,614 5.6 9.7 6.0
Copper ion oxidation 94 8.1 5.7 8.7 95 6.8 8.7 7.1 109 6.3 7.3 6.6 106 6.3 6.6 5.1
Diazo-caffeine, sodium benzoate with blank 7 9.9 8.3 10.4 8 10.2 14.8 11.5 7 8.8 17.7 14.1 7 8.2 7.8 7.1
Diazo-dimethyl sulfoxide with blank 126 8.2 5.5 8.0 132 6.8 12.2 8.1 135 8.6 11.3 7.2 140 7.0 7.3 7.2
Diazo-dimethyl sulfoxide without blank 99 11.7 6.3 10.8 101 4.6 12.9 5.1 101 7.8 13.4 6.5 106 5.8 9.3 6.1
Diazo-dyphylline with blank 9 8.2 6.7 12.2 9 3.9 9.6 9.3 9 3.6 4.2 4.8 8 5.1 6.5 4.6
Diazonium salt-surfactant with blank 493 11.8 6.8 11.9 497 6.1 12.1 5.8 504 5.1 10.9 5.7 508 5.6 8.8 5.7
Diazonium salt-surfactant without blank 35 13.3 13.0 12.7 35 11.8 15.6 12.4 35 10.5 14.4 10.0 34 8.4 6.6 7.1
Enzymatic oxidation 21 12.0 4.8 10.2 18 6.6 10.4 6.0 19 8.6 14.7 9.7 19 5.3 12.0 4.1
Other method 36 12.6 5.4 10.4 41 7.8 12.9 7.4 34 3.8 7.4 5.5 34 5.7 12.2 5.2
Vanadate oxidation 640 5.5 4.4 2.8 644 4.0 5.5 3.7 637 3.3 4.6 3.2 646 2.5 5.4 2.8
Calcium 741 3.9 2.9 4.0 738 2.8 4.2 2.9 750 2.7 4.2 2.9 754 2.6 4.2 2.5
Colorimetry arsenazo III 160 3.0 3.6 2.3 159 2.9 2.6 3.4 161 3.0 3.2 3.0 166 2.8 2.4 2.6
Colorimetry_methylxylenol blue 28 2.9 3.1 2.9 32 1.8 2.5 2.7 37 1.4 2.2 1.3 40 1.8 2.1 1.7
Colorimetry_OCPC 410 2.9 2.6 3.4 406 2.8 3.3 2.7 407 2.7 3.5 3.0 404 2.6 2.9 2.5
NM-BAPTA 137 1.6 1.6 1.6 136 1.4 1.7 1.6 139 1.3 1.4 1.2 141 1.5 1.0 0.7
Other method 5 1.0 2.6 1.6 4 2.9 4.7 3.7 6 1.3 5.5 3.0 3 2.1 3.2 2.4
Chloride 1,075 3.0 2.8 2.9 1,079 2.6 2.0 2.6 1,087 2.4 2.3 2.5 1,096 2.4 2.1 2.7
ISE, diluted 573 3.1 2.4 3.1 576 2.2 2.1 2.1 590 2.1 2.7 2.2 595 1.8 2.5 2.0
ISE, undiluted 469 2.3 2.8 2.9 471 2.1 1.6 2.1 470 2.6 2.1 2.6 478 2.6 1.7 2.1
Other method 33 2.7 3.5 2.4 32 4.4 2.2 4.0 27 2.3 2.3 2.8 23 4.7 3.8 5.5
Cholesterol, total 1,672 3.1 4.7 3.1 1,694 4.6 2.9 4.9 1,710 4.5 3.0 4.6 1,728 4.4 2.8 4.6
Cholesterol esterase 1,643 3.2 4.6 3.1 1,659 4.6 2.9 5.0 1,683 4.5 3.0 4.6 1,702 4.4 2.7 4.6
Other method 29 2.4 6.3 2.9 35 4.5 2.4 4.9 27 4.9 4.3 5.2 26 4.3 3.7 4.2
Creatine kinase 675 3.2 4.2 3.3 676 4.1 3.6 4.2 682 3.9 2.7 4.0 692 4.1 3.2 4.1
Creatine phosphate to creatine 219 3.3 2.8 3.2 217 2.2 3.4 2.0 230 2.2 3.1 2.0 231 2.4 3.1 2.4
Creatine phosphate to creatine with activator 442 2.8 4.7 3.4 445 4.8 3.3 4.8 441 4.8 2.7 4.7 450 4.8 3.1 5.0
Dry chemistry 6 12.1 7.8 11.0 5 8.1 7.3 7.4 5 1.8 3.3 1.2 5 3.1 4.8 4.4
Other method 8 4.6 1.6 4.7 9 4.4 4.9 3.0 6 3.0 1.8 3.5 6 4.5 5.1 4.4
Creatinine 1,654 13.6 7.2 12.1 1,675 7.3 11.9 7.3 1,697 7.4 12.0 7.2 1,711 6.9 17.1 6.7
Enzymatic method 76 38.4 6.5 16.2 81 4.1 12.2 3.3 94 4.7 7.6 4.3 100 4.1 14.5 4.6
Kinetic Jaffe with compensation 379 12.6 7.4 11.5 386 7.2 10.9 7.4 374 5.0 4.7 5.3 370 4.0 8.0 4.0
Kinetic Jaffe without compensation 904 10.9 5.8 7.6 914 6.7 6.7 6.5 944 5.8 7.8 6.0 957 5.8 11.4 5.9
Other method 27 8.9 10.1 9.1 31 12.9 17.8 13.4 32 11.3 13.1 11.3 26 7.4 26.8 6.9
Rate blanked compensated kinetic Jaffe method 268 6.0 3.7 4.8 263 3.5 4.6 3.7 253 3.4 5.0 3.7 258 3.0 5.2 3.3
Gamma-glutamyl transpeptidase 1,631 7.7 7.6 7.5 1,651 7.9 7.5 7.8 1,665 7.8 7.6 7.7 1,683 7.8 7.6 7.4
Gamma-glutamyl-carboxy-nitroanilide 1,577 7.7 7.6 7.5 1,590 7.9 7.5 7.7 1,611 7.8 7.6 7.6 1,630 7.8 7.4 7.4
Gamma-glutamyl-p-nitroanilide 17 6.2 5.3 2.1 18 9.9 9.6 11.1 19 8.3 9.6 9.0 21 7.6 7.9 8.3
G-glutamyl-p-nitroanilide (dry chemistry) 9 8.2 3.7 4.3 9 1.7 3.8 1.7 9 2.0 4.1 4.4 8 2.1 6.4 1.5
Other method 28 7.7 6.7 6.5 34 9.1 9.0 9.7 26 7.4 7.3 6.8 24 7.1 7.9 3.0
Glucose 1,662 3.9 3.1 4.1 1,683 2.8 3.9 2.9 1,701 2.9 3.7 2.8 1,719 2.8 3.5 2.7
Glucose oxidase 440 4.4 4.1 4.2 446 3.8 4.4 3.9 449 3.8 4.2 3.6 450 3.3 3.7 3.4
Hexokinase 1,193 3.3 2.8 2.9 1,204 2.4 3.1 2.6 1,224 2.6 3.3 2.6 1,242 2.5 3.2 2.5
Other method 29 4.0 4.0 5.5 33 3.5 4.6 3.7 28 4.6 5.7 4.4 27 3.9 5.4 3.3
High-density lipoprotein cholesterol 1,539 11.3 12.2 11.4 1,559 12.7 12.1 12.6 1,578 12.5 12.9 12.1 1,595 12.0 12.3 12.0
Enzymatic with detergent 605 9.2 10.2 9.4 625 10.8 9.1 10.4 707 11.2 10.9 11.2 713 11.0 9.5 10.5
Enzymatic with immunoinhibition 221 4.0 3.6 3.1 224 3.2 3.5 3.3 224 3.2 3.5 4.6 227 5.3 4.3 3.4
Enzymatic with others 196 11.6 13.1 12.3 196 11.8 10.8 13.3 189 12.8 8.6 12.9 198 11.0 10.2 12.5
Enzymatic with polyanion precipitation 178 12.4 12.8 10.2 180 14.5 10.1 13.1 186 11.0 13.8 10.4 184 11.5 13.7 14.0
Enzymatic with polyethylene glycol 311 4.2 3.6 4.3 302 3.9 4.4 3.4 243 3.1 3.1 3.3 247 2.9 2.3 3.1
Other method 27 12.3 10.0 12.0 31 8.9 13.3 8.4 27 11.7 13.5 13.4 24 12.4 12.2 12.5
Iron 421 3.3 4.1 3.4 419 3.4 3.3 3.7 424 3.6 3.3 3.8 428 3.9 3.2 4.1
Bathophenanthroline without deproteinization 139 1.3 2.8 1.4 136 1.9 1.4 2.3 138 2.5 1.3 2.0 137 2.3 1.4 1.3
Ferrozine without deproteinization 147 1.9 3.8 1.9 146 2.4 1.4 2.3 148 2.4 1.6 2.7 150 2.4 1.3 2.4
Nitroso-PSAP without deproteinization 45 1.2 2.1 1.5 48 2.6 1.8 2.9 48 2.3 1.5 2.6 51 2.7 1.2 2.7
Pyridyl azo dye ascorbate without deproteinization 4 5.2 9.4 5.4 4 3.7 5.9 9.0 3 12.4 5.1 9.1 3 26.0 3.5 20.0
Tripyridyltriazine without deproteinization 81 1.2 2.3 1.0 84 2.1 0.8 2.3 84 1.4 1.0 2.0 84 2.0 1.2 1.5
Lactate dehydrogenase 907 36.9 40.7 37.1 912 41.6 37.2 41.7 915 41.5 37.5 41.4 926 41.4 37.6 41.5
Lactate to pyruvate 486 4.7 4.8 4.9 498 5.0 4.7 4.9 516 4.9 5.0 5.0 520 4.8 5.0 5.0
Other method 11 34.2 37.8 36.3 11 40.0 39.2 40.5 9 36.7 34.8 36.5 7 36.6 34.2 36.1
Pyruvate to lactate 405 7.4 7.8 7.7 397 7.2 7.6 7.3 384 7.2 7.4 7.1 393 7.0 7.0 6.8
Pyruvate to lactate (dry chemistry) 5 2.3 3.9 3.4 6 3.8 5.6 3.8 6 1.6 2.9 2.7 6 2.0 4.1 2.0
Lipase 413 10.8 13.7 10.8 413 14.2 10.0 14.4 429 14.7 12.4 14.2 437 19.0 11.7 15.9
Hydrolysis of 1,2-diglyceride with quinone dye 84 3.6 2.3 3.7 89 3.5 4.0 2.4 88 1.8 3.1 2.2 90 2.8 3.8 2.3
Hydrolysis of 1,2-O-dilauryl-rac-glycero-3-glutaric acid-(6'-methylresorufin) ester 315 10.6 15.0 10.5 313 22.5 10.8 22.8 330 26.5 11.8 25.9 335 24.5 10.9 24.2
Hydrolysis of 1-oleoyl-2,3-diacetyl glycerol 10 2.4 3.1 2.4 9 3.9 1.8 3.2 9 0.0 2.8 0.0 9 4.9 3.4 3.6
Low-density lipoprotein cholesterol 920 6.1 5.0 6.2 924 9.6 6.0 5.6 938 4.7 6.7 4.7 951 4.5 8.5 4.7
Enzymatic with detergent 653 5.6 5.0 5.5 660 9.7 6.0 5.9 715 4.4 6.3 3.9 728 4.3 8.9 4.6
Enzymatic with others 225 6.9 7.2 7.1 226 5.9 5.7 5.4 186 8.4 7.2 7.8 187 6.0 5.7 6.2
Enzymatic with polyethylene glycol 30 5.9 6.2 6.3 28 9.7 6.1 8.4 28 8.4 8.2 8.6 29 7.4 10.2 6.9
Other method 12 9.8 7.6 8.6 10 9.5 4.4 7.2 9 7.5 11.1 7.4 7 5.7 11.4 7.3
Magnesium 291 3.4 3.0 3.5 292 3.3 3.7 2.2 298 3.1 3.8 3.0 298 2.0 3.7 2.1
Colorimetry_Xylidyl blue 287 3.4 3.0 3.5 290 3.3 3.7 2.2 295 3.1 3.8 3.0 296 2.0 3.7 2.1
Osmolality 151 1.5 1.3 1.5 154 1.1 1.2 1.0 154 1.0 1.2 1.1 157 1.0 1.1 1.0
Freezing point depression osmometer 143 1.4 1.3 1.5 148 1.1 1.2 1.0 148 1.0 1.2 1.1 150 1.0 1.1 1.0
Other method 8 2.0 1.8 1.4 6 0.8 1.1 1.5 6 0.9 1.0 0.7 7 0.9 1.8 1.4
Phosphorus 687 3.5 2.8 2.3 688 2.5 2.2 2.3 699 2.3 2.5 2.4 700 2.4 2.3 2.8
Enzymatic 5 1.6 3.9 5.6 4 5.3 9.5 6.4 3 4.8 7.8 4.8 3 2.7 4.2 6.0
Molybden blue colorimetry 161 2.2 1.4 2.3 164 1.8 2.1 1.3 174 1.9 2.3 2.1 175 1.7 2.1 1.9
Other method 3 8.1 5.8 11.1 2 8.9 12.9 10.9 3 6.3 15.1 8.9 2 2.9 0.0 3.8
Phosphomolybdate 518 3.6 2.4 2.3 518 2.2 2.3 2.1 519 2.3 2.6 2.6 520 2.9 3.4 2.3
Potassium 1,085 1.9 2.3 1.8 1,087 2.4 0.0 2.4 1,098 2.2 1.9 2.2 1,107 2.1 2.0 2.1
ISE, diluted 575 1.8 1.4 1.7 577 1.4 0.0 1.6 592 1.5 0.0 1.4 597 1.5 1.7 1.4
ISE, undiluted 477 2.0 1.5 0.0 478 2.6 0.0 1.4 479 1.5 1.9 2.4 487 1.6 2.2 1.5
Other method 33 3.0 4.2 2.2 32 5.4 2.2 5.4 27 2.5 3.4 2.9 23 3.1 2.9 2.4
Protein, total 1,536 3.4 3.8 3.4 1,558 3.8 3.3 3.6 1,565 3.5 3.2 3.6 1,585 3.6 2.9 3.6
Biuret method 1,509 3.3 3.8 3.4 1,529 3.7 3.3 3.6 1,543 3.5 3.2 3.6 1,563 3.6 2.8 3.6
Other method 27 3.7 5.0 4.3 29 5.6 5.5 5.0 22 8.5 6.9 8.8 22 7.2 5.8 6.8
Sodium 1,085 1.2 1.3 1.4 1,087 1.3 1.2 1.2 1,098 1.3 1.4 1.3 1,107 1.3 1.4 1.3
ISE, diluted 547 0.7 1.2 1.0 553 1.1 1.0 1.1 569 1.2 0.7 1.1 575 0.8 1.1 1.2
ISE, undiluted 505 1.5 1.7 1.4 502 1.6 1.2 1.4 502 1.5 1.4 1.5 509 1.4 1.4 1.4
Other method 33 2.0 1.5 1.8 32 1.6 1.9 1.5 27 1.4 2.2 1.9 23 1.4 1.6 1.1
Total CO2 217 6.5 6.5 6.7 220 5.3 6.0 5.8 222 5.5 5.9 5.2 225 5.1 5.5 6.2
Other method 5 11.0 13.4 10.9 6 6.5 8.8 5.4 3 3.1 4.4 4.8 3 3.2 4.4 2.2
Phosphoenolpyruvate carboxylase 212 6.4 6.5 6.6 214 5.3 5.9 5.8 219 5.5 5.9 5.2 222 5.1 5.5 6.2
Total iron-binding capacity 384 3.5 3.2 3.6 380 3.0 3.6 3.1 384 3.1 3.3 3.2 388 3.2 3.3 3.6
Bathophenanthroline 130 2.1 2.4 2.1 124 2.7 2.0 2.6 124 2.3 1.5 2.7 123 2.4 1.9 2.3
Chromazural B 25 3.9 2.6 3.7 25 2.8 2.5 3.7 22 4.2 5.7 4.5 24 4.8 4.5 5.2
Ferrozine 112 2.3 3.4 2.8 110 2.8 2.4 2.8 114 3.1 2.3 3.7 115 3.5 2.3 3.2
Nitroso-PSAP 114 2.7 2.3 3.0 119 2.1 2.5 2.4 121 2.2 2.6 2.4 123 2.2 2.6 2.4
Other method 3 2.8 8.1 3.6 2 1.6 3.4 1.8 3 25.1 15.0 25.2 3 21.5 11.8 21.7
Triglyceride 1,623 3.9 5.9 3.5 1,645 5.2 3.8 5.4 1,664 5.3 3.8 5.1 1,680 5.9 3.6 5.5
Enzymatic with free glycerol elimination 527 3.0 2.7 2.6 529 2.7 2.9 3.0 555 3.2 2.7 2.5 566 2.9 2.5 3.3
Enzymatic without free glycerol elimination 1,071 4.3 6.7 4.2 1,085 6.4 4.5 6.5 1,083 6.2 4.6 6.4 1,089 7.0 4.4 6.6
Other method 25 4.3 4.3 4.5 31 6.8 5.8 7.0 26 8.3 8.0 7.0 25 7.5 4.3 6.1
Urea nitrogen 1,609 4.8 4.2 4.9 1,632 4.1 4.8 4.5 1,648 4.7 5.0 4.4 1,669 4.2 4.7 4.4
Other method 28 5.4 4.2 6.1 32 5.8 4.6 6.4 25 9.1 8.9 9.0 25 5.4 6.8 5.0
Urease with colorimetry 16 4.2 8.3 1.2 17 8.4 1.3 8.5 15 5.8 3.8 6.6 15 6.2 4.2 5.7
Urease with GLDH 1,564 4.8 4.2 4.9 1,582 4.1 4.6 4.5 1,607 4.4 4.9 4.3 1,628 4.2 4.7 4.3
Uric acid 1,258 3.5 3.6 3.4 1,273 3.7 3.4 3.6 1,281 3.5 3.3 3.4 1,291 3.3 3.4 3.1
Other method 17 4.5 3.8 3.9 18 4.0 5.8 4.3 14 4.9 8.6 5.2 12 9.1 9.8 7.3
Uricase 1,235 3.4 3.5 3.4 1,249 3.6 3.4 3.5 1,261 3.4 3.2 3.4 1,273 3.3 3.3 3.1
Uricase (dry chemistry) 6 1.9 2.4 1.0 6 1.6 2.4 2.1 6 0.6 1.7 0.6 6 1.3 2.4 1.3

Abbreviations: LDH, lactate dehydrogenase; P5P, pyridoxal-5-phosphate; BCG, bromocresol green; BCP, bromocresol purple; PNPP, para nitrophenylphosphate; AMP, 2-amino-2-methyl-1-propanol; DEA, diethanolamine; EAE, 2-ethylaminoethanol; MDH, malate dehydrogenase; OCPC, o-creolphthalein complexone; NM-BAPTA, 5-nitro-5'-methyl-BAPTA; ISE, ion-selective electrodes; Nitroso-PSAP, 2-nitroso-5-(N-propyl-N-sulfopropylamino)-phenol; GLDH, glutamate dehydrogenase.

*Number of laboratories participated in Korean External Quality Assessment Service 2019.

Lab Med Qual Assur 2020;42:97~111 https://doi.org/10.15263/jlmqa.2020.42.3.97
© Lab Med Qual Assur