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Test Code LAB8093 APT Test, Fetal Hemoglobin, Feces

Important Note

MEDICAL DIRECTOR APPROVAL IS REQUIRED IF TEST IS BEING REQUESTED ON ANY PATIENT WHO IS > 1 WEEK OLD.

PAGE LMR AT 314-747-1320 FOR APPROVAL

Performing Laboratory

St. Louis Children's Hospital - Hematology

Specimen Requirements

Specimen Type: BLOODY feces

Patient Prep: None
Container/Tube:  
Preferred: Plastic, screw-capped container
Acceptable: Diaper or soiled bedding
Collection Volume: 1 gram
If specimen is soaked into diaper/bedding send article that specimen has soaked into.
Special Instructions:

Specimen must be grossly bloody (either pink or red).
Deliver specimen to lab promptly. DO NOT send thru pneumatic tube system.

Sample Rejection

Tarry or brown stool

Mislabeled or unlabeled specimen

Logistics

Day(s) Test Set Up: Monday-Sunday
Cut-off time: None; performed as received
Turnaround Time: Same day; 2 hours from receipt in performing lab

Reference Values

Reference Range: Negative (Indicates maternal blood was swallowed)
Critical Values: None established

Methodology

Dye

Limitations

  • NA

Additional Information

For SLCH Laboratory use only

Lab Processing Instructions: DO NOT SPIN. Give all specimen to the technologist on Coag/UA bench.
Processed Volume: NA
Analyte Stability:

Specimen Type Temperature    Time
Bloody feces (unprocessed)     Ambient 2 days
  Refrigerated 3 days
  Frozen  Unacceptable    

NOTES: Medical Director approval required for specimens received on patients >1 week old.

Test Classification and CPT Code

83033

LOINC

in process

Last Reviewed

07/2024