====== 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]]), ~58k ([[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]])  |

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