Lipemia Interferences in Biochemical Tests, Investigating the Efficacy of Different Removal Methods in comparison with Ultracentrifugation as the Gold Standard

Table 4

Comparison of the results of native serum, serum blank, and diluted serum with ultracentrifuged serum.

Parameter	Severe lipemia (TG > 1000 mg/dl)			Allowable bias
	Native serum (%)	Serum blank (%)	Serum dilution (%)
ALT	0			11.48
Albumin	+13	0	+43	1.43
ALP	−3			6.72
Amylase	+14	+4	+15	7.4
AST	+14	−27	+36	6.54
Bilirubin (total)	0			8.95
Calcium	+40	+30	+57	0.82
Chloride	+82	+22	+90	0.5
CPK	−22	−5	−61	11.5
Creatinine	−20	−80	0	3.96
GGT	−9			11.6
Glucose	+44	+2	+63	2.34
Iron	−9	+660	+21	8.8
LDH	+9	+8	+7	4.3
Lipase	+7			11.31
Magnesium	+180	+108	+325	1.8
Phosphorus	+109	+187	+210	3.38
Total protein	+59	−3	+70	1.36
TIBC	+34	+33	+78	1.3
Urea	+11	+17	−17	5.57
Uric acid	+4			4.87

Difference with ultracentrifuged serum, calculated as bias.