====== hsCRP measurements ======

High-sensitivity [[https://en.wikipedia.org/wiki/C-reactive_protein|CRP]] (hsCRP) levels in [[start|Lifelines]] participants were  determined in [[blood analyses|blood samples]] ([[sections|section]]: [[Physical state]]) using three different lab-methods.\\
The difference between the three methods are stated in the table.\\	

^ Variable code         ^ Variable name  ^ Kit name           ^ Supplier         ^ Tube type  ^ Participants                     ^
| hscrp_result_all_m_1  | SCRP           | CardioPhase hsCRP  | Siemens (BNII)   | Serum      | ~8k ([[1A]]), ~82k ([[3A]])      |
| hscrp_result_all_m_2  | LCRP           | CardioPhase hsCRP  | Siemens (BNII)   | Heparin    | ~49k ([[1A]])                    |
| hscrp_result_all_m_3  | CRPH           | CRPL3              | Roche (Modular)  | Heparin    | ~1k ([[1A]]) and ~0.5k ([[2A]])  |

hscrp_result_all_m_2 and hscrp_result_all_m_3 only differ in the supplier. This does not have an effect on the measured values.\\
hscrp_result_all_m_1 differs from hscrp_result_all_m_2 and hscrp_result_all_m_3 in the type of tube used to collect the sample. This causes differences in the measured values. hscrp_result_all_m_1 values can be converted to hscrp_result_all_m_2/hscrp_result_all_m_3 using the formula: SCRP = 0.92 x LCRP/CRPH - 0.01.