Number of laboratories that participated in each test of general chemistry in 2019
| Test | Trials | |||
|---|---|---|---|---|
| 1st | 2nd | 3rd | 4th | |
| Alanine aminotransferase | 1,687 | 1,707 | 1,724 | 1,742 |
| Albumin | 1,560 | 1,581 | 1,590 | 1,609 |
| Alkaline phosphatase | 1,487 | 1,507 | 1,511 | 1,533 |
| Amylase | 822 | 821 | 828 | 841 |
| Aspartate aminotransferase | 1,687 | 1,706 | 1,723 | 1,741 |
| Bilirubin, direct | 815 | 815 | 815 | 823 |
| Bilirubin, total | 1,564 | 1,585 | 1,595 | 1,614 |
| Calcium | 742 | 738 | 750 | 754 |
| Chloride | 1,076 | 1,079 | 1,087 | 1,096 |
| Cholesterol, total | 1,674 | 1,694 | 1,710 | 1,728 |
| Creatine kinase | 676 | 676 | 682 | 692 |
| Creatinine | 1,656 | 1,675 | 1,697 | 1,711 |
| Gamma-glutamyl transferase | 1,633 | 1,651 | 1,665 | 1,683 |
| Glucose | 1,664 | 1,683 | 1,701 | 1,719 |
| High-density lipoprotein cholesterol | 1,541 | 1,559 | 1,578 | 1,595 |
| Iron | 422 | 419 | 424 | 428 |
| Lactate dehydrogenase | 908 | 912 | 915 | 926 |
| Lipase | 413 | 413 | 429 | 437 |
| Low-density lipoprotein cholesterol | 922 | 924 | 938 | 951 |
| Magnesium | 291 | 292 | 298 | 298 |
| Osmolality | 151 | 154 | 154 | 157 |
| Phosphorus | 688 | 688 | 699 | 700 |
| Potassium | 1,086 | 1,087 | 1,098 | 1,107 |
| Protein, total | 1,538 | 1,558 | 1,565 | 1,585 |
| Sodium | 1,086 | 1,087 | 1,098 | 1,107 |
| Total CO2 | 217 | 220 | 222 | 225 |
| Total iron-binding capacity | 385 | 380 | 384 | 388 |
| Triglyceride | 1,625 | 1,645 | 1,664 | 1,680 |
| Urea nitrogen | 1,611 | 1,632 | 1,648 | 1,669 |
| Uric acid | 1,260 | 1,273 | 1,281 | 1,291 |