Quick answers
- What is Cat hair used for?
- The FDA-approved label (Standardized Cat Hair, Allermed Laboratories, Inc., June 3, 2025) says: “Studies have shown that skin tests with cat extract are useful in the diagnosis of cat allergy. As a rule, persons with cat allergy have positive skin reactions when tested with cat extract, and non-allergic individuals rarely react (7, 8, 9). …” This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.
- Does Cat hair have a boxed warning?
- Yes. The FDA label for Standardized Cat Hair has a boxed warning, the FDA’s strongest warning. Read it on the full label and ask your pharmacist.
- Is there a shortage of Cat hair?
- No current shortage is listed by the FDA for the products of this medicine (FDA data from October 30, 2026).
- Has Cat hair been recalled?
- No recall linked to the products of this medicine appears in the FDA enforcement reports we use.
- Who makes Cat hair?
- 1 company lists prescription products of Cat hair in the FDA NDC Directory, including Allermed Laboratories, Inc..
What Cat hair is used for
Quoted from the “Indications and Usage” section of the FDA-approved label.
Studies have shown that skin tests with cat extract are useful in the diagnosis of cat allergy. As a rule, persons with cat allergy have positive skin reactions when tested with cat extract, and non-allergic individuals rarely react (7, 8, 9). …
— FDA label: Standardized Cat Hair, Allermed Laboratories, Inc., effective June 3, 2025. Read the full label on DailyMed →
This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.
Conditions named on the label
These condition names appear word for word in the label’s “Indications and Usage” text (matched with a reviewed table). Each page lists hospitals whose own websites name the condition.
Related medical specialties
Boxed warning
A boxed warning (“black box”) is the FDA’s strongest warning on a drug label, for serious or life-threatening risks.
This label has a boxed warning. Read it on the full label →
Forms and how it is given
| Dosage forms | Injection |
|---|---|
| Route | Cutaneous · Intradermal · Subcutaneous |
| Prescription products | 1 in the FDA NDC Directory |
| Brand names | Standardized Cat Hair |
Companies that list this medicine
Labelers in the FDA NDC Directory: the company named on the package (maker or distributor), with the number of prescription products.
- Allermed Laboratories, Inc.1 product
FDA approval history
- BLA: Biologics License Application: how a biologic medicine (made from living cells) is approved.
| Application | Sponsor | Approved | Later changes approved |
|---|---|---|---|
| BLA103473 | — | Date not on file | — |
Shortage status
The FDA drug shortage list does not show these products.
Recalls
No recall linked to these products (by their NDC code) appears in the FDA enforcement reports.
Official identifiers
| RxCUI (RxNorm) | 851948 |
|---|---|
| SPL set ID of the quoted label | abffdafd-f922-44ab-8e98-972a72ca1004 |
| FDA labels (SPL) | 1 |
| FDA applications | BLA103473 |
| Active ingredients (FDA) | FELIS CATUS HAIR |
Sources
- FDA-approved label on DailyMed (National Library of Medicine) — Standardized Cat Hair, Allermed Laboratories, Inc., effective June 3, 2025; via openFDA, FDA data exported October 30, 2026, retrieved October 31, 2026
- NDC Directory (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
- Drugs@FDA (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
- Drug recall enforcement reports (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 27, 2026, retrieved October 31, 2026
- Drug shortages (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
openFDA data is provided by the FDA as is; it may be incomplete. Always rely on the label that comes with your medicine. FDA Enforcement Report search →