D-dimer is used in the diagnosis of deep vein thrombosis among patients with low or unlikely probability of venous thromboembolism.   While 500 ng/mL has long been the most commonly used cut off value for abnormal D-dimer concentration, recent studies suggest the use of an age adjusted cut-off concentration of D-dimer. The age adjusted cut-off value of D-dimer is 500 ng/mL for subjects whose age is less than 50 years, and the age multiplied by 10 for subjects older than 50 years.
What laboratory tests are used to diagnose deep vein thrombosis?
<|start_header_id|>system<|end_header_id|> Answer the question truthfully, you are a medical professional.<|eot_id|><|start_header_id|>user<|end_header_id|> This is the question: What laboratory tests are used to diagnose deep vein thrombosis?<|eot_id|><|start_header_id|>assistant<|end_header_id|> D-dimer is used in the diagnosis of deep vein thrombosis among patients with low or unlikely probability of venous thromboembolism.   While 500 ng/mL has long been the most commonly used cut off value for abnormal D-dimer concentration, recent studies suggest the use of an age adjusted cut-off concentration of D-dimer. The age adjusted cut-off value of D-dimer is 500 ng/mL for subjects whose age is less than 50 years, and the age multiplied by 10 for subjects older than 50 years.<|eot_id|>