Table 2.

Estimated concentration of D-dimer in positive-result AS samples

Patient
Number
Sample
Number
No
Dilution
1:2
Dilution
1:4
Dilution
Estimated
Concentration
AS patient #1Sample #1NegativeN/AN/A<1.0 μg/mL
Sample #2PositivePositiveNegative2–4 μg/mL
Sample #3PositivePositiveNegative2–4 μg/mL
Sample #4PositivePositiveNegative2–4 μg/mL
AS patient #2Sample #1NegativeN/AN/A<1.0 μg/mL
Sample #2NegativeN/AN/A<1.0 μg/mL
Sample #3NegativeN/AN/A<1.0 μg/mL
Sample #4NegativeN/AN/A<1.0 μg/mL
AS patient #3Sample #1PositivePositiveNegative2–4 μg/mL
Sample #2PositivePositiveNegative2–4 μg/mL
Sample #3NegativeN/AN/A<1.0 μg/mL
Sample #4NegativeN/AN/A<1.0 μg/mL
AS patient #4Sample #1PositiveNegativeN/A1–2 μg/mL
Sample #2PositivePositiveNegative2–4 μg/mL
Sample #3PositivePositivePositive4–8 μg/mL
Sample #4PositivePositivePositive4–8 μg/mL

Concentration is estimated based on the highest dilution that produced agglutination.