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Table 3 Geometric mean laboratory estimates for the AMH content in ampoules A, B and C as provided by the 16 methods which met the validity criteria

From: Establishment of a WHO Reference Reagent for anti-Mullerian hormone

Lab Sample A Sample C GM(A,C) Sample B Ratio of B to GM(A,C)
1 337 335 336 150 0.45
2 623 624 624 283 0.45
3 1094 1074 1084 548 0.51
4 523 542 533 293 0.55
5 520 537 528 284 0.54
6 1182 1133 1157 554 0.48
7 484 456 470 252 0.54
8      
9 546 553 549 298 0.54
10      
11      
12 499 506 502 324 0.65
13 277 288 282 141 0.50
14 481 470 475 253 0.53
15 453 471 462 268 0.58
16 461 467 464 203 0.44
17      
18      
19 379 381 380 210 0.55
20 472 498 485 312 0.64
21 410 432 421 228 0.54
Geometric Mean 508 513 511 269 0.53
95% Confidence Limits 417–619 430–612 426–612 221–328 0.50–0.56
GCV 45% 41% 42% 45% 12%
Robust Geometric Mean 487 494 489 265 0.53
  1. Ampoules A and C are coded duplicates of the proposed reference material, 16/190. Ampoule B is a comparator preparation containing approximately half the AMH content