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HelpTest Code LAB663 Alpha-Fetoprotein, Amniotic Fluid
Additional Codes
| Mayo Test ID |
|---|
| AFPA |
Reporting Name
Alpha Fetoprotein, AFUseful For
Screening for open neural tube defects or other fetal abnormalities
Follow-up testing for patients with elevated serum alpha-fetoprotein results or in conjunction with cytogenetic testing
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| ACHE_ | Acetylcholinesterase, AF | Yes | No |
Testing Algorithm
If alpha-fetoprotein is positive, then acetylcholinesterase will be performed at an additional charge.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Amniotic FldNecessary Information
The following information is required:
1. Estimated due date by ultrasound
2. Collection date
3. Gestational age must be between 13 and 24 weeks; 16 to 18 weeks preferred.
If not ordering electronically, provide information on Second Trimester Maternal Screening Alpha-Fetoprotein / Quad Screen Patient Information (T595) and send with specimen.
Specimen Required
Container/Tube: Amniotic fluid container
Specimen Volume: 0.75 mL
Collection Instructions: Do not centrifuge.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Amniotic Fld | Refrigerated (preferred) | 7 days | |
| Ambient | 7 days |
Special Instructions
Reference Values
< 2.0 multiples of median (MoM)
Day(s) Performed
Monday through Friday
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
82106
82013 (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| AFPA | Alpha Fetoprotein, AF | 58735-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 6739 | Collection Date | 58734-5 |
| DAT15 | EDD by US Scan | 11781-2 |
| 6740 | Last Menstrual Period (LMP) | 8665-2 |
| 24233 | EDD by LMP | 11779-6 |
| 24239 | GA at Collection by Scan | 11888-5 |
| 24240 | GA at Collection by Dates | 11885-1 |
| 24234 | GA Used | 21299-3 |
| 9950 | Alpha Fetoprotein, AF | 1832-5 |
| 24241 | Results | 29595-6 |
| 24235 | Interpretation | 59462-2 |
| 24236 | Additional Comments | 48767-8 |
| 24237 | Follow up | 80615-8 |
| 24238 | General Test Info | 48767-8 |
Report Available
2 to 19 daysReject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Method Name
AFPA: Immunoenzymatic Assay
ACHE_: Polyacrylamide Electrophoresis
Forms
Second Trimester Maternal Screening Alpha-Fetoprotein / Quad Screen Patient Information (T595) is required.