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Evaluate amniotic fluid for the presence of RBCs (semiquantitative), WBCs, differential, and for physical appearance
Leukocyte (WBC) count is often of limited value; however, amniotic fluid infection or chorioamnionitis is usually associated with polymorphonuclear leukocytosis (>100/μL). Controversy exists in the literature concerning the significance of the presence of leukocytes in amniotic fluid.1,4,5 Some studies reflect the absence of leukocytes and bacteria was associated with a negative amniotic fluid culture in 77.9% to 95% of the patients.1,4,6
Microscopic and macroscopic examination
Amniotic, amniocentesis fluid
1 to 2 mL
0.5 mL (Note: This volume does not allow for repeat testing.)
The first 1-2 mL should be discarded due to contamination with blood or maternal cells. When blood-tinged fluid is obtained initially, another syringe should be used to obtain clear fluid, if possible.
Causes for Rejection
Specimens referred to our laboratories for fluid cell counts must be handled properly to ensure accuracy. Please call for handling instructions.
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|005260||Cell Ct, Amniotic Fluid||005261||Color, Amniotic||38386-9|
|005260||Cell Ct, Amniotic Fluid||005262||Clarity, Amniotic||9335-1|
|005260||Cell Ct, Amniotic Fluid||005269||Nucleated Cells, Amniotic||/uL||55793-4|
|005260||Cell Ct, Amniotic Fluid||005265||RBC, Amniotic||/uL||55779-3|
|005260||Cell Ct, Amniotic Fluid||005266||Polys, Amniotic||%||26518-1|
|005260||Cell Ct, Amniotic Fluid||005267||Mononuclear Cells, Amniotic||%||26493-7|
|005260||Cell Ct, Amniotic Fluid||005268||Comments:||20999-9|