======Procedure for Phosphorus examination======
  *Learn operation of [[Erba XL-640]] .
  *Select equipment
    *Use Erba XL-640 as preferred equipment.
    *If Erba XL-640 is malfunctioning, stop the examination and follow [[procedure for responding to Erba XL-640 failure]]
  *Read following documents

^references|{{ :nchsls:c:biochemistry:document:phosphorus_reagent_and_test_parameter-brij-1.ods |}}|Phosphorus Reference Reagent}}|
| |{{:nchsls:c:biochemistry:document:ref_-1_us4599316-brij35.pdf}}|
 

^**environmental and safety controls**|{{:nchsls:c:biochemistry:document:msds_for_ammonium_molybdate.pdf|MSDS for Ammonium  Molybdate}}|
| |{{:nchsls:c:biochemistry:document:msds_for_h2so4.pdf|MSDS for H2SO4}}|
| |{{:nchsls:c:biochemistry:document:msds_for_tween_80.pdf|MSDS for Tween 80}}|    

  *Document and revise [[common laboratory informations related to the examinations]]. 
  *Depending on the selected equipment follow appropriate procedure described below.

**Preparation and use** {{ :nchsls:c:biochemistry:document:phosphorus_reagent_and_test_parameter-brij-1.ods |Phosphorus Reagent preparation|}}
[[nchsls:c:biochemistry:document:online_information_resource_for_patients_and_users#Instructions_for_Patient_Collected_Samples|Special instructions for patients]]

======Erba XL-640======
|[[Centrifugation]]|
|[[Preparing aliquot]]|
|[[nchsls:c:biochemistry:document:how_to_perform_examination_in_erba_xl-640|Procedure for examination in Erba XL-640]]|      
|[Instruction for Calibration {{:nchsls:c:biochemistry:document:calibration.odt|}}]]| 
======Extra instructions======
  -Glucose GOD POD reagetn have phosphate buffer. It influence when phosphorous is measured. This is especially in IQC sample. So, Keep Glucose test sequence later than phosphorous.