| LDH

Lactate dehydrogenase (LDH or LD) is an enzyme found in a wide variety of organisms, including plants and animals. It is present in four different enzyme classes, two of which are cytochrome C-dependent enzymes that act on D-lactic acid and L-lactic acid respectively. Because it is released during tissue damage, it is a marker of common injuries and disease such as heart failure.
 

| Typical data

As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, wash technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data are provided below for reference only.

 

Concentration (ng/mL)	500	250	125	62.5	31.2	15.6	7.81	0
OD	2.36	1.36	0.8	0.48	0.34	0.28	0.23	0.09
Corrected OD	2.27	1.27	0.71	0.39	0.25	0.19	0.14	-

 

| Repeatability

Intra-assay Precision (Precision within an assay)：CV% < 10%; Inter-assay Precision (Precision between assays)：CV% < 10%
 

| Recovery

The recovery of Rat LDH spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.

 

Sample Type	Range(%)	Average Recovery(%)
Serum(n=8)	84-101	95
Plasma(n=8)	92-105	102
Tissue Homogenates(n=8)	96-108	105

 

| Linearity

Samples were spiked with high concentrations of Rat LDH and diluted with Universal Diluent to produce samples with values within the range of the assay.

 

		Serum(n=4)	Plasma(n=4)	Tissue Homogenates(n=4)
1 : 2	Range (%)	84-95	88-96	90-110
	Average (%)	91	92	96
1 : 4	Range (%)	89-103	87-108	105-115
	Average (%)	94	98	108