| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| gray top tube used for | 1.09 | 0.3 | 4894 | 43 |
| grey top tube used for | 0.73 | 0.3 | 7055 | 45 |
| what is the gray top tube used for | 1.22 | 0.5 | 393 | 80 |
| gray top tube is used for what test | 1.78 | 0.6 | 7131 | 22 |
| grey top tube tests | 0.48 | 0.1 | 411 | 34 |
| green top tube used for | 0.76 | 0.4 | 510 | 21 |
| gray top test tubes | 0.41 | 0.7 | 7515 | 21 |
| gray top tube additive | 0.61 | 0.2 | 6627 | 77 |
| grey top tubes for blood | 1.58 | 0.4 | 9657 | 8 |
| gray top tube lab test | 1.89 | 0.1 | 6902 | 68 |
| grey top tube additive | 1.64 | 0.5 | 5053 | 40 |
| gray top tube blood test | 1.23 | 0.4 | 9171 | 39 |
| gray top lab tube | 1.11 | 0.5 | 4921 | 21 |
| the yellow top tube is used for | 0.48 | 0.3 | 5623 | 5 |
| gray top blood tube | 1.15 | 0.6 | 5964 | 61 |
| grey top tube blood test | 1.29 | 0.4 | 5310 | 91 |
| grey top tubes for blood collection | 1.23 | 0.8 | 3172 | 79 |
| grey top blood tube | 0.26 | 0.4 | 7113 | 18 |
| grey tube for blood test | 0.43 | 0.4 | 7154 | 85 |
| grey top lab tubes | 0.06 | 0.3 | 8263 | 17 |
| grey tubes contain what additive | 1.01 | 0.3 | 2284 | 83 |
