Additional Collection Information

OUTPATIENTS: SEND TO LAB ON SAME DAY AS COLLECTED.
For Outpatients NOT receiving heparin, the specimen is stable for 10 hours at room temperature.

Collect

1 Blue top tube (Na Citrate); invert tube gently at least 5 times to prevent clotting

Fill tube completely (i.e., wait until vacuum stops). Do not combine partially filled tubes. Do not open tube, remove plasma, or refrigerate.

Testing Schedule/Turnaround Time

Routine: 24 Hours
STAT: 4 Hours

CPT Codes

85730

Synonyms

  • APTT, PTT

Synonyms

APTT, PTT

Performing Lab(s)

Arrow Springs Laboratory
Bethesda Butler Laboratory
Bethesda North Hospital Laboratory
Good Samaritan Hospital Laboratory
McCullough Hyde Hospital Laboratory
Western Ridge Laboratory

Storage/Transport Temperature

Ambient

Stability (from collection to initiation)

Ambient: 4 Hours
For Outpatients NOT receiving heparin: 10 Hours

Unacceptable Conditions

Clotted specimen; hemolysis; tube <90% full; improper labeling; specimen collected in tube other than 3.2% citrate
Collection

Additional Collection Information

OUTPATIENTS: SEND TO LAB ON SAME DAY AS COLLECTED.
For Outpatients NOT receiving heparin, the specimen is stable for 10 hours at room temperature.

Collect

1 Blue top tube (Na Citrate); invert tube gently at least 5 times to prevent clotting

Fill tube completely (i.e., wait until vacuum stops). Do not combine partially filled tubes. Do not open tube, remove plasma, or refrigerate.

Testing Schedule/Turnaround Time

Routine: 24 Hours
STAT: 4 Hours

CPT Codes

85730

Synonyms

  • APTT, PTT

Synonyms

APTT, PTT
Lab Team Member Information

Performing Lab(s)

Arrow Springs Laboratory
Bethesda Butler Laboratory
Bethesda North Hospital Laboratory
Good Samaritan Hospital Laboratory
McCullough Hyde Hospital Laboratory
Western Ridge Laboratory

Storage/Transport Temperature

Ambient

Stability (from collection to initiation)

Ambient: 4 Hours
For Outpatients NOT receiving heparin: 10 Hours

Unacceptable Conditions

Clotted specimen; hemolysis; tube <90% full; improper labeling; specimen collected in tube other than 3.2% citrate